12564528 has 20 divisors (see below), whose sum is σ = 32458488. Its totient is φ = 4188160.

The previous prime is 12564527. The next prime is 12564599. The reversal of 12564528 is 82546521.

It is not an unprimeable number, because it can be changed into a prime (12564521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130833 + ... + 130928.

Almost surely, 2^12564528 is an apocalyptic number.

It is an amenable number.

12564528 is an abundant number, since it is smaller than the sum of its proper divisors (19893960).

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

12564528 is a wasteful number, since it uses less digits than its factorization.

12564528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261772 (or 261766 counting only the distinct ones).

The product of its digits is 19200, while the sum is 33.

The square root of 12564528 is about 3544.6477963262. The cubic root of 12564528 is about 232.4781063903.

The spelling of 12564528 in words is "twelve million, five hundred sixty-four thousand, five hundred twenty-eight".