18479904 has 24 divisors (see below), whose sum is σ = 48510000. Its totient is φ = 6159936.

The previous prime is 18479893. The next prime is 18479927. The reversal of 18479904 is 40997481.

It is a tau number, because it is divible by the number of its divisors (24).

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, 96154 + ... + 96345.

It is an arithmetic number, because the mean of its divisors is an integer number (2021250).

Almost surely, 2^18479904 is an apocalyptic number.

It is an amenable number.

18479904 is an abundant number, since it is smaller than the sum of its proper divisors (30030096).

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

18479904 is a wasteful number, since it uses less digits than its factorization.

18479904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192512 (or 192504 counting only the distinct ones).

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

The square root of 18479904 is about 4298.8258862159. The cubic root of 18479904 is about 264.3828238495.

The spelling of 18479904 in words is "eighteen million, four hundred seventy-nine thousand, nine hundred four".