12055656 has 32 divisors (see below), whose sum is σ = 30245760. Its totient is φ = 4004352.

The previous prime is 12055649. The next prime is 12055661. The reversal of 12055656 is 65655021.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

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, 7761 + ... + 9183.

It is an arithmetic number, because the mean of its divisors is an integer number (945180).

Almost surely, 2^12055656 is an apocalyptic number.

It is an amenable number.

12055656 is an abundant number, since it is smaller than the sum of its proper divisors (18190104).

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

12055656 is a wasteful number, since it uses less digits than its factorization.

12055656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785 (or 1781 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 12055656 is about 3472.1255737660. The cubic root of 12055656 is about 229.2962483601.

The spelling of 12055656 in words is "twelve million, fifty-five thousand, six hundred fifty-six".