12657232 has 20 divisors (see below), whose sum is σ = 28026976. Its totient is φ = 5424480.

The previous prime is 12657223. The next prime is 12657247. The reversal of 12657232 is 23275621.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 12657232.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56394 + ... + 56617.

Almost surely, 2^12657232 is an apocalyptic number.

It is an amenable number.

12657232 is an abundant number, since it is smaller than the sum of its proper divisors (15369744).

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

12657232 is a wasteful number, since it uses less digits than its factorization.

12657232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113026 (or 113020 counting only the distinct ones).

The product of its digits is 5040, while the sum is 28.

The square root of 12657232 is about 3557.7003808640. The cubic root of 12657232 is about 233.0484650545.

The spelling of 12657232 in words is "twelve million, six hundred fifty-seven thousand, two hundred thirty-two".