23056520 has 32 divisors (see below), whose sum is σ = 52346520. Its totient is φ = 9139200.

The previous prime is 23056507. The next prime is 23056531. The reversal of 23056520 is 2565032.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3467044 + 19589476 = 1862^2 + 4426^2 .

It is a super-2 number, since 2×23056520² = 1063206229020800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (23) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1970 + ... + 7070.

Almost surely, 2^23056520 is an apocalyptic number.

23056520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23056520 is an abundant number, since it is smaller than the sum of its proper divisors (29290000).

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

23056520 is a wasteful number, since it uses less digits than its factorization.

23056520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5225 (or 5221 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 23056520 is about 4801.7205249785. The cubic root of 23056520 is about 284.6194572285.

The spelling of 23056520 in words is "twenty-three million, fifty-six thousand, five hundred twenty".