72 is the natural number following 71 and preceding 73. In mathematics, a natural number is either a positive integer (1, 2, 3, 4, ...) or a non-negative integer (0, 1, 2, 3, 4, ...). The former definition is generally used in number theory, while the latter is preferred in set theory. ... 71 is the natural number following 70 and preceding 72. ... 73 is the natural number following 72 and preceding 74. ...

<< 70 71 72 73 74 75 76 77 78 79 >> 69 is the natural number following 68 and preceding 70. ... 70 (seventy) is the natural number following 69 and preceding 71. ... 71 is the natural number following 70 and preceding 72. ... 73 is the natural number following 72 and preceding 74. ... 74 is the natural number following 73 and preceding 75. ... 75 (seventy-five) is the natural number following 74 and preceding 76. ... 76 is the natural number following 75 and preceding 77. ... 77 is the natural number following 76 and preceding 78. ... 78 (seventy-eight) is the natural number following 77 and followed by 79. ... 79 is the natural number following 78 and preceding 80. ... 80 (eighty) is the natural number following 79 and preceding 81. ... List of numbers -- Integers This is a list of articles about numbers (not about numerals). ... The integers consist of the positive natural numbers (1, 2, 3, …), their negatives (−1, −2, −3, ...) and the number zero. ... 0 10 20 30 40 50 60 70 80 90 >> 0 (zero), alternatively called naught, nil, nada, ought, zilch, zip, nothing or nought, is both a number and a numeral. ... 10 (ten) is the 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. ... 70 (seventy) is the natural number following 69 and preceding 71. ... 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	seventy-two
Ordinal	72nd (seventy-second)
Factorization
Divisors	2, 3, 4, 6, 8, 9, 12, 18, 24, 36
Roman numeral	LXXII
Binary	1001000
Hexadecimal	48

In linguistics, cardinal numbers is the name given to number words that are used for quantity (one, two, three), as opposed to ordinal numbers, words that are used for order (first, second, third). ... 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, factorization or factoring is the decomposition of an object (for example, a number, a polynomial, or a matrix) into a product of other objects, or factors, which when multiplied together give the original. ... 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 (base 2 numerals) represents numeric values using two symbols, typically 0 and 1. ... In mathematics and computer science, hexadecimal, 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

Seventy-two is the sum of four consecutive primes (13 + 17 + 19 + 23), as well as the sum of six consecutive primes (5 + 7 + 11 + 13 + 17 + 19). 72 is a Harshad number and a pronic number. In mathematics, a prime number (or a prime) is a natural number that has exactly two distinct positive divisors, one and itself. ... A Harshad number, or Niven number, is an integer that is divisible by the sum of its digits in a given number base. ... A pronic number, or oblong number or heteromecic number, is a number which is the product of two consecutive nonnegative integers, that is, n(n + 1). ...

In normal space, the exterior angles of an equilateral pentagon measure 72 degrees each. In geometry, a pentagon is any five-sided polygon. ...

There are 17 solutions to the equation φ(x) = 72, more than any integer below 72, making it a highly totient number. In number theory, the totient φ(n) of a positive integer n is defined to be the number of positive integers less or equal than n and coprime to n. ... A highly totient number k is an integer that has more solutions to the equation φ(x) = k, where φ is Eulers totient function, than any integer below it. ...

In science

• The atomic number of hafnium

In astronomy, The atomic number (Z) is a term used in chemistry and physics to represent the number of protons found in the nucleus of an atom. ... General Name, Symbol, Number hafnium, Hf, 72 Chemical series transition metals Group, Period, Block 4, 6, d Appearance gray steel Atomic mass 178. ... Lunar astronomy: the large crater is Daedalus, photographed by the crew of Apollo 11 as they circled the Moon in 1969. ...

Messier object M72, a magnitude 10.0 globular cluster in the constellation Aquarius

The New General Catalogue object NGC 72, a magnitude 13.5 barred spiral galaxy in the constellation Andromeda

The Saros number of the solar eclipse series which began on -727 August 16 and ended on 752 January 21. The duration of Saros series 72 was 1478.1 years, and it contained 83 solar eclipses.

The Saros number of the lunar eclipse series which began on -407 June 5 and ended on 891 July 25. The duration of Saros series 72 was 1298.1 years, and it contained 73 lunar eclipses.

Table of all 110 Messier objects. ... Globular Cluster M72 M72 LAW, a US Army rocket launcher This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ... 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. ... A globular cluster is a spherical bundle of stars (star cluster) that orbits a galaxy as a satellite. ... Orion is a remarkable constellation, visible from most places on the globe at one time or another during the year. ... For other uses, see Aquarius (disambiguation). ... The New General Catalogue (NGC) is the most well-known catalogue of deep sky objects in amateur astronomy. ... NGC 1300, viewed nearly face-on. ... Andromeda is a constellation named for the princess Andromeda (which is Greek for Ruler over men), a character in Greek mythology. ... 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 French 1999 eclipse A solar eclipse occurs when the Moon passes in front of the Sun and obscures it totally or partially. ... August 16 is the 228th day of the year (229th in leap years) in the Gregorian Calendar. ... Events Pope Stephen II, pope for 3 days in March. ... January 21 is the 21st day of the year in the Gregorian calendar. ... An eclipse refers to the phenomenon of one body passing into the shadow cast by another body. ... June 5 is the 156th day of the year in the Gregorian calendar (157th in leap years), with 209 days remaining. ... Events October 6 - Election of Pope Formosus Arnulf of Carinthia defeats the Normans at the Battle of Leuven Births Abd ar-Rahman III, emir and first caliph of Córdoba. ... July 25 is the 206th day (207th in leap years) of the year in the Gregorian calendar, with 159 days remaining. ...

In other fields

Seventy-two is also:

• The average number of heartbeats per minute for a resting adult.
• The conventional number of scholars translating the Septuagint, according to the legendary account in the "Letter of Aristeas".
• The conventional number of disciples sent forth by Jesus in Luke 10 in some manuscripts (seventy in others).
• The number of names of God, according to Kabbalah (see names of God in Judaism).
• The number of hours in three days.
• The total number of books in the Holy Bible in the Catholic version if the Book of Lamentations is considered part of the Book of Jeremiah.
• In dpi, the standard resolution of an Apple Macintosh screen.
• The number of the French department Sarthe.
• The designation of USA Interstate 72, a freeway that runs from Missouri to Illinois.
• The registry of the U.S. Navy's nuclear aircraft carrier USS Abraham Lincoln (CVN-72), named after U.S. President Abraham Lincoln.
• The designation of the Soviet T-72 tank.
• In the movie The Red Violin, the lot number of the Bussotti red violin at the DuVal auction house.
• The year AD 72, 72 BC, or 1972.
• The Rule of 72 in finance.
• Candace Cross' MAGICAL NUMBER