12556436 has 12 divisors (see below), whose sum is σ = 22929312. Its totient is φ = 6005208.

The previous prime is 12556429. The next prime is 12556441. The reversal of 12556436 is 63465521.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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, 68150 + ... + 68333.

It is an arithmetic number, because the mean of its divisors is an integer number (1910776).

Almost surely, 2^12556436 is an apocalyptic number.

It is an amenable number.

12556436 is a deficient number, since it is larger than the sum of its proper divisors (10372876).

12556436 is a wasteful number, since it uses less digits than its factorization.

12556436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136510 (or 136508 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 12556436 is about 3543.5061732696. The cubic root of 12556436 is about 232.4281876339.

The spelling of 12556436 in words is "twelve million, five hundred fifty-six thousand, four hundred thirty-six".