12564336 has 20 divisors (see below), whose sum is σ = 32457992. Its totient is φ = 4188096.

The previous prime is 12564319. The next prime is 12564347. The reversal of 12564336 is 63346521.

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, 130831 + ... + 130926.

Almost surely, 2^12564336 is an apocalyptic number.

12564336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12564336 is an abundant number, since it is smaller than the sum of its proper divisors (19893656).

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

12564336 is a wasteful number, since it uses less digits than its factorization.

12564336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261768 (or 261762 counting only the distinct ones).

The product of its digits is 12960, while the sum is 30.

The square root of 12564336 is about 3544.6207131370. The cubic root of 12564336 is about 232.4769222093.

The spelling of 12564336 in words is "twelve million, five hundred sixty-four thousand, three hundred thirty-six".