21930

21930 is a natural number that follows 21929 and precedes 21931. In mathematics, it is an even, composite integer. Its prime factorization is 2 × 3 × 5 × 17 × 43, which implies there are 32 positive divisors. Examples of these divisors include 1, 2, 3, 5, 6, 10, 15, 17, 30, 34, 43, 51, 85, 86, 102, 129, 170, 215, 258, 430, 510, 645, 731, 1462, 2193, 255, 1290, 3655, 4386, 7310, 10965, and 21930. The number is divisible by 2, 3, 5, and by various combinations of its prime factors, such as 2×17=34, 2×43=86, or 3×5×17=255. Its digit sum is 15, so it is divisible by 3, and its last digit is 0, so it is divisible by 5.

Beyond pure mathematics, 21930 may serve as an identifier in various systems. Five-digit numbers like this are common in postal coding, inventory tracking, model numbers, and data catalogs. Without a given context, 21930 does not denote a single widely recognized entity.

In practice, references to 21930 in a specific field would define its meaning, whether as a mathematical example illustrating divisibility and factorization, a catalog entry, a postal code designation, or another kind of numeric designation.