198 is the natural number between 197 and 199. Natural number can mean either a positive integer (1, 2, 3, 4, ...) or a non-negative integer (0, 1, 2, 3, 4, ...). Natural numbers have two main purposes: they can be used for counting (there are 3 apples on the table), or they can be used for ordering (this is... 197 is the natural number between 196 and 198. ... 199 is the natural number between 198 and 200. ...

Commonly, ordinal numbers, or ordinals for short, are numbers used to denote the position in an ordered sequence: first, second, third, fourth, etc. ... 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). ... This article is about the mathematical concept. ... The system of Roman numerals is a numeral system originating in ancient Rome, and was adapted from Etruscan numerals. ... The binary numeral system 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

198 is a self number and an abundant number. It is also divisible by the sum of its digits and thus a Harshad number. A self number or Colombian number is an integer which, in a given base, can not be generated by any other integer added to the sum of its digits. ... In mathematics, an abundant number or excessive number is a number n for which σ(n) > 2n. ... A Harshad number, or Niven number, is an integer that is divisible by the sum of its digits in a given number base. ...