12912636 has 36 divisors (see below), whose sum is σ = 33121256. Its totient is φ = 3912480.

The previous prime is 12912619. The next prime is 12912649. The reversal of 12912636 is 63621921.

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 11 ways as a sum of consecutive naturals, for example, 2995 + ... + 5898.

Almost surely, 2^12912636 is an apocalyptic number.

It is an amenable number.

12912636 is an abundant number, since it is smaller than the sum of its proper divisors (20208620).

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

12912636 is a wasteful number, since it uses less digits than its factorization.

12912636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8922 (or 8909 counting only the distinct ones).

The product of its digits is 3888, while the sum is 30.

The square root of 12912636 is about 3593.4156453157. The cubic root of 12912636 is about 234.6055613470.

The spelling of 12912636 in words is "twelve million, nine hundred twelve thousand, six hundred thirty-six".