12556332 has 72 divisors (see below), whose sum is σ = 33388992. Its totient is φ = 3974400.

The previous prime is 12556331. The next prime is 12556361. The reversal of 12556332 is 23365521.

12556332 is a `hidden beast` number, since 1 + 25 + 5 + 633 + 2 = 666.

It is a super-2 number, since 2×12556332² = 315322946588448, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12556296 and 12556305.

It is not an unprimeable number, because it can be changed into a prime (12556331) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 69282 + ... + 69462.

It is an arithmetic number, because the mean of its divisors is an integer number (463736).

Almost surely, 2^12556332 is an apocalyptic number.

12556332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12556332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16694496).

12556332 is an abundant number, since it is smaller than the sum of its proper divisors (20832660).

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

12556332 is a wasteful number, since it uses less digits than its factorization.

12556332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279 (or 274 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 12556332 is about 3543.4914985082. The cubic root of 12556332 is about 232.4275459285.

The spelling of 12556332 in words is "twelve million, five hundred fifty-six thousand, three hundred thirty-two".