12657136 has 20 divisors (see below), whose sum is σ = 25094872. Its totient is φ = 6181056.

The previous prime is 12657131. The next prime is 12657167. The reversal of 12657136 is 63175621.

It is a junction number, because it is equal to n+sod(n) for n = 12657098 and 12657107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12657131) 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, 8511 + ... + 9886.

Almost surely, 2^12657136 is an apocalyptic number.

12657136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12657136 is a deficient number, since it is larger than the sum of its proper divisors (12437736).

12657136 is a wasteful number, since it uses less digits than its factorization.

12657136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18448 (or 18442 counting only the distinct ones).

The product of its digits is 7560, while the sum is 31.

The square root of 12657136 is about 3557.6868889772. The cubic root of 12657136 is about 233.0478758601.

The spelling of 12657136 in words is "twelve million, six hundred fifty-seven thousand, one hundred thirty-six".