23315904 has 112 divisors (see below), whose sum is σ = 69738240. Its totient is φ = 7637760.

The previous prime is 23315899. The next prime is 23315911. The reversal of 23315904 is 40951332.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177919 + ... + 178049.

Almost surely, 2^23315904 is an apocalyptic number.

23315904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23315904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34869120).

23315904 is an abundant number, since it is smaller than the sum of its proper divisors (46422336).

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

23315904 is a wasteful number, since it uses less digits than its factorization.

23315904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 23315904 is about 4828.6544709681. The cubic root of 23315904 is about 285.6827950055.

The spelling of 23315904 in words is "twenty-three million, three hundred fifteen thousand, nine hundred four".