22865904 has 30 divisors (see below), whose sum is σ = 63993176. Its totient is φ = 7621920.

The previous prime is 22865903. The next prime is 22865939. The reversal of 22865904 is 40956822.

It is a happy number.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22865903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 79252 + ... + 79539.

Almost surely, 2^22865904 is an apocalyptic number.

22865904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22865904 is an abundant number, since it is smaller than the sum of its proper divisors (41127272).

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

22865904 is a wasteful number, since it uses less digits than its factorization.

22865904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158805 (or 158796 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 22865904 is about 4781.8306118055. The cubic root of 22865904 is about 283.8329375184.

The spelling of 22865904 in words is "twenty-two million, eight hundred sixty-five thousand, nine hundred four".