18472992 has 48 divisors (see below), whose sum is σ = 48720672. Its totient is φ = 6128640.

The previous prime is 18472981. The next prime is 18473003. The reversal of 18472992 is 29927481.

It is an interprime number because it is at equal distance from previous prime (18472981) and next prime (18473003).

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32067 + ... + 32637.

It is an arithmetic number, because the mean of its divisors is an integer number (1015014).

Almost surely, 2^18472992 is an apocalyptic number.

18472992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18472992 is an abundant number, since it is smaller than the sum of its proper divisors (30247680).

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

18472992 is a wasteful number, since it uses less digits than its factorization.

18472992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921 (or 913 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The square root of 18472992 is about 4298.0218705819. The cubic root of 18472992 is about 264.3498575534.

The spelling of 18472992 in words is "eighteen million, four hundred seventy-two thousand, nine hundred ninety-two".