20604

20604 is a natural number that comes after 20603 and before 20605. In decimal notation it is written as 20604. The number is even and composite, with prime factorization 2^2 × 3 × 17 × 101, which yields 24 positive divisors.

As a property, 20604 is a Harshad (Niven) number in base 10, since the sum of its digits is 2 + 0 + 6 + 0 + 4 = 12 and 20604 is divisible by 12 (20604 ÷ 12 = 1717). Its divisibility by small primes includes 2, 3, and 4, and it is consequently divisible by 6 and 12 as well. The factorization also shows divisibility by 17, 34, 51, 68, 102, 204, and 101, among others. The structure 2^2 × 3 × 17 × 101 indicates it is a highly composite product of relatively small primes.

Beyond mathematics, 20604 can appear as a five-digit numeral in various contexts, such as identifiers in datasets or catalog systems, or as a ZIP-style postal code in the United States, though this article does not specify any particular location. In general, five-digit numbers like 20604 are used across multiple domains as codes or references.

See also: Harshad number, composite number, list of integers.