23156904 has 16 divisors (see below), whose sum is σ = 57892320. Its totient is φ = 7718960.

The previous prime is 23156899. The next prime is 23156911. The reversal of 23156904 is 40965132.

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, 482412 + ... + 482459.

It is an arithmetic number, because the mean of its divisors is an integer number (3618270).

Almost surely, 2^23156904 is an apocalyptic number.

23156904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

23156904 is an abundant number, since it is smaller than the sum of its proper divisors (34735416).

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

23156904 is a wasteful number, since it uses less digits than its factorization.

23156904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964880 (or 964876 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 23156904 is about 4812.1620920331. The cubic root of 23156904 is about 285.0319200936.

The spelling of 23156904 in words is "twenty-three million, one hundred fifty-six thousand, nine hundred four".