38 (thirty-eight) is the natural number following 37 and preceding 39. In mathematics, a natural number can mean either an element of the set {1, 2, 3, ...} (i. ... 37 (thirty-seven) is the natural number following 36 and preceding 38. ... 39 (thirty-nine) is the natural number following 38 and preceding 40. ...

← 30 31 32 33 34 35 36 37 38 39 → 29 (twenty-nine) is the natural number following 28 and preceding 30. ... 30 (thirty) is the natural number following 29 and preceding 31. ... 31 (thirty-one) is the natural number following 30 and preceding 32. ... 32 (thirty-two) is the natural number following 31 and preceding 33. ... 33 is the natural number following 32 and preceding 34. ... 34 (thirty-four) is the natural number following 33 and preceding 35. ... 35 (thirty-five) is the natural number following 34 and preceding 36. ... 36 (thirty-six) is the natural number following 35 and preceding 37. ... 37 (thirty-seven) is the natural number following 36 and preceding 38. ... 39 (thirty-nine) is the natural number following 38 and preceding 40. ... 40 (forty) is the natural number following 39 and preceding 41. ... List of numbers — Integers This is a list of articles about numbers (not about numerals). ... The integers are commonly denoted by the above symbol. ... 0 10 20 30 40 50 60 70 80 90 → For other uses, see zero or 0. ... 10 (ten) is an even natural number following 9 and preceding 11. ... 20 (twenty) is the natural number following 19 and preceding 21. ... 30 (thirty) is the natural number following 29 and preceding 31. ... 40 (forty) is the natural number following 39 and preceding 41. ... 50 (fifty) is the number following 49 and preceding 51. ... 60 (sixty) is the natural number following 59 and preceding 61. ... Look up seventy in Wiktionary, the free dictionary. ... 80 (eighty) is the natural number following 79 and preceding 81. ... 90 (ninety) is the natural number preceded by 89 and followed by 91. ... 100 (one hundred) (the Roman numeral is C for centum) is the natural number following 99 and preceding 101. ...
Cardinal	38 thirty-eight
Ordinal	38th thirty-eighth
Factorization
Divisors	1, 2, 19, 38
Roman numeral	XXXVIII
Binary	100110
Hexadecimal	26

Aleph-0, the smallest infinite cardinal In mathematics, cardinal numbers, or cardinals for short, are a generalized kind of number used to denote the size of a set. ... Commonly, ordinal numbers, or ordinals for short, are numbers used to denote the position in an ordered sequence: first, second, third, fourth, etc. ... ... In mathematics, a divisor of an integer n, also called a factor of n, is an integer which evenly divides n without leaving a remainder. ... The system of Roman numerals is a numeral system originating in ancient Rome, and was adapted from Etruscan numerals. ... The binary numeral system, or base-2 number system, is a numeral system that represents numeric values using two symbols, usually 0 and 1. ... In mathematics and computer science, hexadecimal, base-16, or simply hex, is a numeral system with a radix, or base, of 16, usually written using the symbols 0–9 and A–F, or a–f. ...

In mathematics

38 is the 11th distinct biprime and the 7th in the {2.q} family. It is the initial member of the third distinct biprime pair (38,39). In mathematics, a semiprime (also called biprime or 2-almost prime) is a natural number that is the product of two (not necessarily distinct) prime numbers. ... In mathematics, a semiprime (also called biprime or 2-almost prime) is a natural number that is the product of two (not necessarily distinct) prime numbers. ... Events Roman Empire Tigellinus, minister and favorite of the later Roman emperor Nero, is banished for adultery with Caligulas sisters. ...

38 has an aliquot sum of 22 which is itself a distinct biprime In fact 38 is the first number to be at the head of a chain of four distinct biprimes in its 8 member aliquot sequence (38,22,14,10,8,7,1,0). 38 is the 8th member of the 7-aliquot tree. Gaius Sulpicius Galba becomes consul. ... In mathematics, a semiprime (also called biprime or 2-almost prime) is a natural number that is the product of two (not necessarily distinct) prime numbers. ... For alternate uses, see Number 38. ... Gaius Sulpicius Galba becomes consul. ... Events First year of tianfeng era of the Chinese Xin Dynasty. ... Events Differentiation of localized Teutonic tribes of the Irminones. ... For other uses, see 8 (disambiguation). ... This article is about the year 7. ... This article is about the year 1. ... (Redirected from 0) Zero redirects here. ...

38! - 1 yields 523022617466601111760007224100074291199999999, which is a factorial prime. A factorial prime is a number that is one less or one more than a factorial and is also a prime number. ...

There is no answer to the equation φ(x) = 38, making 38 a nontotient. The first thousand values of φ(n) In number theory, the totient (n) of a positive integer n is defined to be the number of positive integers less than or equal to n and coprime to n. ... A nontotient is a positive integer n which is not in the range of Eulers totient function φ, that is, for which φ(x) = n has no solution. ...

38 is the sum of the squares of the first three primes.

37 and 38 are the first pair of consecutive positive integers not divisible by any of their digits.

38 is the largest even number which cannot be written as the sum of two odd composite numbers. Wikipedia does not yet have an article with this exact name. ...

In science

• The atomic number of strontium

It has been suggested that List of elements by atomic number be merged into this article or section. ... General Name, Symbol, Number strontium, Sr, 38 Chemical series alkaline earth metals Group, Period, Block 2, 5, s Appearance silvery white metallic Atomic mass 87. ...

Astronomy

• The Messier object M38, a magnitude 7.0 open cluster in the constellation Auriga
• The Saros number of
  • the solar eclipse series which began on -1729 June 26 and ended on -431 August 14. The duration of Saros series 38 was 1298.1 years, and it contained 73 solar eclipses.
  • the lunar eclipse series which began on -1408 April 16 and ended on -111 June 3. The duration of Saros series 38 was 1298.1 years, and it contained 73 lunar eclipses.
• The New General Catalogue object NGC 38, a spiral galaxy in the constellation Pisces
• The 38th parallel north is pre-Korean War boundary between North Korea and South Korea.

The Messier objects are a set of astronomical objects catalogued by Charles Messier in his catalogue of Nebulae and Star Clusters first published in 1774. ... Open Cluster M38 (also known as Messier Object 38, Messier 38, M38, or NGC 1912) is an open cluster in the Auriga constellation. ... The apparent magnitude (m) of a star, planet or other heavenly body is a measure of its apparent brightness; that is, the amount of light received from the object. ... The Pleiades is one of the most famous open clusters. ... This article does not cite any references or sources. ... Auriga (IPA: , Latin: ) is a northern constellation. ... A Saros cycle is a period of 6585 + 1/3 days (approximately 18 years 10 days and 8 hours) which can be used to predict eclipses of the Sun and the Moon. ... Photo taken during the 1999 eclipse. ... is the 177th day of the year (178th in leap years) in the Gregorian calendar. ... is the 226th day of the year (227th in leap years) in the Gregorian calendar. ... Time lapse movie of the 3 March 2007 lunar eclipse A lunar eclipse occurs whenever the Moon passes through some portion of the Earths shadow. ... April 16 is the 106th day of the year in the Gregorian calendar (107th in leap years). ... June 3 is the 154th day of the year (155th in leap years) in the Gregorian calendar. ... The New General Catalogue (NGC) is the most well-known catalogue of deep sky objects in amateur astronomy. ... It has been suggested that spiral nebula be merged into this article or section. ... For other uses, see Pisces. ... The 38th parallel north is a line of latitude that cuts across Asia, the Mediterranean and the United States. ... Combatants United Nations:  Republic of Korea,  Australia,  Belgium,  Luxembourg,  Canada,  Colombia,  Ethiopia,  France,  Greece,  Luxembourg,  Netherlands,  New Zealand,  Philippines,  South Africa,  Thailand,  Turkey,  United Kingdom,  United States Medical staff:  Denmark,  Australia,  Italy,  Norway,  Sweden Communist states:  Democratic People’s Republic of Korea,  Peoples Republic of China,  Soviet Union Commanders...

In other fields

Thirty-eight is also:

• The number 38 in Mandarin Chinese ("san1 ba1" Roman Pinyin) is an insult referring to someone who acts in an effeminate way^{[citation needed]}
• The number of slots on an American Roulette wheel
• The number of games that each team in the current English Premiership, the top division in English Association Football, plays in a season
• Bill C-38 legalized same-sex marriage in Canada
• A "38" is often the name for a snub nose .38 caliber revolver
• The 38 class is the most famous class of steam locomotive used in New South Wales

A European Roulette wheel. ... For the Scottish equivalent see Scottish Premier League The FA Premier League (often referred to as the Barclays Premiership in England and the Barclays English Premier League or just simply The EPL internationally) is a league competition for football clubs located at the top of the English football league system... The striker (wearing red jersey) has run past the defender (in white jersey) and is about to take a shot at the goal, while the goalkeeper positions himself to stop the ball. ... The Civil Marriage Act (full title: An Act respecting certain aspects of legal capacity for marriage for civil purposes) was introduced as Bill C-38 in the first session of the 38th Canadian Parliament on February 1, 2005. ... . ... Class leader 3801 - a streamlined example of the class The 38 class was the most popular type of steam locomotive built and operated by the New South Wales Government Railways in Australia. ... Union Pacific Big Boy #4012 at work on a cold November 29, 1941 A steam locomotive is a locomotive powered by steam. ... Capital Sydney Government Constitutional monarchy Governor Professor Marie Bashir Premier Morris Iemma (ALP) Federal representation  - House seats 50  - Senate seats 12 Gross State Product (2004-05)  - Product ($m)  $305,437 (1st)  - Product per capita  $45,153/person (4th) Population (End of March 2006)  - Population  6,817,100 (1st)  - Density  8. ...

Historical years

38 A.D., 38 B.C., 1938, 2038, etc. For alternate uses, see Number 38. ... Centuries: 2nd century BC - 1st century BC - 1st century Decades: 80s BC 70s BC 60s BC 50s BC 40s BC - 30s BC - 20s BC 10s BC 0s 10s 20s Years: 43 BC 42 BC 41 BC 40 BC 39 BC 38 BC 37 BC 36 BC 35 BC 34 BC... Year 1938 (MCMXXXVIII) was a common year starting on Saturday (link will take you to calendar). ... 2038 (MMXXXVIII) will be a common year starting on Friday of the Gregorian calendar. ...