12556916 has 12 divisors (see below), whose sum is σ = 22039332. Its totient is φ = 6259968.

The previous prime is 12556879. The next prime is 12556933. The reversal of 12556916 is 61965521.

It can be written as a sum of positive squares in 2 ways, for example, as 3254416 + 9302500 = 1804^2 + 3050^2 .

It is a super-2 number, since 2×12556916² = 315352278862112, which contains 22 as substring.

It is a congruent number.

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, 3035 + ... + 5858.

It is an arithmetic number, because the mean of its divisors is an integer number (1836611).

Almost surely, 2^12556916 is an apocalyptic number.

It is an amenable number.

12556916 is a deficient number, since it is larger than the sum of its proper divisors (9482416).

12556916 is a wasteful number, since it uses less digits than its factorization.

12556916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9250 (or 9248 counting only the distinct ones).

The product of its digits is 16200, while the sum is 35.

The square root of 12556916 is about 3543.5739021502. The cubic root of 12556916 is about 232.4311493052.

The spelling of 12556916 in words is "twelve million, five hundred fifty-six thousand, nine hundred sixteen".