23256972 has 18 divisors (see below), whose sum is σ = 58788548. Its totient is φ = 7752312.

The previous prime is 23256943. The next prime is 23256977. The reversal of 23256972 is 27965232.

23256972 is a `hidden beast` number, since 23 + 2 + 569 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 646027 = 23256972 / (2 + 3 + 2 + 5 + 6 + 9 + 7 + 2).

It is not an unprimeable number, because it can be changed into a prime (23256977) 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, 322978 + ... + 323049.

Almost surely, 2^23256972 is an apocalyptic number.

It is an amenable number.

23256972 is an abundant number, since it is smaller than the sum of its proper divisors (35531576).

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

23256972 is a wasteful number, since it uses less digits than its factorization.

23256972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646037 (or 646032 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 23256972 is about 4822.5482890273. The cubic root of 23256972 is about 285.4418998796.

The spelling of 23256972 in words is "twenty-three million, two hundred fifty-six thousand, nine hundred seventy-two".