23815664 has 20 divisors (see below), whose sum is σ = 48572040. Its totient is φ = 11280960.

The previous prime is 23815643. The next prime is 23815733. The reversal of 23815664 is 46651832.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 38867 + ... + 39474.

It is an arithmetic number, because the mean of its divisors is an integer number (2428602).

Almost surely, 2^23815664 is an apocalyptic number.

It is an amenable number.

23815664 is an abundant number, since it is smaller than the sum of its proper divisors (24756376).

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

23815664 is a wasteful number, since it uses less digits than its factorization.

23815664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78368 (or 78362 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 23815664 is about 4880.1295064783. The cubic root of 23815664 is about 287.7095193587.

The spelling of 23815664 in words is "twenty-three million, eight hundred fifteen thousand, six hundred sixty-four".