12556972 has 24 divisors (see below), whose sum is σ = 22779792. Its totient is φ = 6052800.

The previous prime is 12556969. The next prime is 12556997. The reversal of 12556972 is 27965521.

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, 12447 + ... + 13417.

It is an arithmetic number, because the mean of its divisors is an integer number (949158).

Almost surely, 2^12556972 is an apocalyptic number.

It is an amenable number.

12556972 is a deficient number, since it is larger than the sum of its proper divisors (10222820).

12556972 is a wasteful number, since it uses less digits than its factorization.

12556972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089 (or 1087 counting only the distinct ones).

The product of its digits is 37800, while the sum is 37.

The square root of 12556972 is about 3543.5818037686. The cubic root of 12556972 is about 232.4314948286.

The spelling of 12556972 in words is "twelve million, five hundred fifty-six thousand, nine hundred seventy-two".