12886556 has 12 divisors (see below), whose sum is σ = 23329320. Its totient is φ = 6221040.

The previous prime is 12886553. The next prime is 12886567. The reversal of 12886556 is 65568821.

It is a super-2 number, since 2×12886556² = 332126651082272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12886553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55430 + ... + 55661.

It is an arithmetic number, because the mean of its divisors is an integer number (1944110).

Almost surely, 2^12886556 is an apocalyptic number.

It is an amenable number.

12886556 is a deficient number, since it is larger than the sum of its proper divisors (10442764).

12886556 is a wasteful number, since it uses less digits than its factorization.

12886556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111124 (or 111122 counting only the distinct ones).

The product of its digits is 115200, while the sum is 41.

The square root of 12886556 is about 3589.7849517764. The cubic root of 12886556 is about 234.4475084932.

The spelling of 12886556 in words is "twelve million, eight hundred eighty-six thousand, five hundred fifty-six".