12520864 has 24 divisors (see below), whose sum is σ = 24740100. Its totient is φ = 6237696.

The previous prime is 12520853. The next prime is 12520873. The reversal of 12520864 is 46802521.

12520864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11696400 + 824464 = 3420^2 + 908^2 .

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, 11412 + ... + 12460.

Almost surely, 2^12520864 is an apocalyptic number.

It is an amenable number.

12520864 is a deficient number, since it is larger than the sum of its proper divisors (12219236).

12520864 is a wasteful number, since it uses less digits than its factorization.

12520864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432 (or 1424 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 12520864 is about 3538.4832909030. The cubic root of 12520864 is about 232.2084927193.

The spelling of 12520864 in words is "twelve million, five hundred twenty thousand, eight hundred sixty-four".