12657912 has 48 divisors (see below), whose sum is σ = 33113640. Its totient is φ = 4031808.

The previous prime is 12657907. The next prime is 12657913. The reversal of 12657912 is 21975621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12657913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12198 + ... + 13194.

Almost surely, 2^12657912 is an apocalyptic number.

12657912 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 12657912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16556820).

12657912 is an abundant number, since it is smaller than the sum of its proper divisors (20455728).

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

12657912 is a wasteful number, since it uses less digits than its factorization.

12657912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052 (or 1025 counting only the distinct ones).

The product of its digits is 7560, while the sum is 33.

The square root of 12657912 is about 3557.7959469312. The cubic root of 12657912 is about 233.0526384293.

The spelling of 12657912 in words is "twelve million, six hundred fifty-seven thousand, nine hundred twelve".