12564456 has 16 divisors (see below), whose sum is σ = 31411200. Its totient is φ = 4188144.

The previous prime is 12564449. The next prime is 12564467. The reversal of 12564456 is 65446521.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261736 + ... + 261783.

It is an arithmetic number, because the mean of its divisors is an integer number (1963200).

Almost surely, 2^12564456 is an apocalyptic number.

It is an amenable number.

12564456 is an abundant number, since it is smaller than the sum of its proper divisors (18846744).

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

12564456 is a wasteful number, since it uses less digits than its factorization.

12564456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523528 (or 523524 counting only the distinct ones).

The product of its digits is 28800, while the sum is 33.

The square root of 12564456 is about 3544.6376401545. The cubic root of 12564456 is about 232.4776623238.

The spelling of 12564456 in words is "twelve million, five hundred sixty-four thousand, four hundred fifty-six".