18996992 has 36 divisors (see below), whose sum is σ = 43340976. Its totient is φ = 8140800.

The previous prime is 18996959. The next prime is 18997019. The reversal of 18996992 is 29969981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3509 + ... + 7092.

It is an arithmetic number, because the mean of its divisors is an integer number (1203916).

Almost surely, 2^18996992 is an apocalyptic number.

It is an amenable number.

18996992 is an abundant number, since it is smaller than the sum of its proper divisors (24343984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18996992 is an equidigital number, since it uses as much as digits as its factorization.

18996992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10624 (or 10610 counting only the distinct ones).

The product of its digits is 629856, while the sum is 53.

The square root of 18996992 is about 4358.5538886195. The cubic root of 18996992 is about 266.8260824586.

The spelling of 18996992 in words is "eighteen million, nine hundred ninety-six thousand, nine hundred ninety-two".