12957132 has 48 divisors (see below), whose sum is σ = 31775744. Its totient is φ = 4104000.

The previous prime is 12957121. The next prime is 12957137. The reversal of 12957132 is 23175921.

It is a self number, because there is not a number n which added to its sum of digits gives 12957132.

It is not an unprimeable number, because it can be changed into a prime (12957137) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 22407 + ... + 22977.

Almost surely, 2^12957132 is an apocalyptic number.

12957132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12957132 is an abundant number, since it is smaller than the sum of its proper divisors (18818612).

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

12957132 is a wasteful number, since it uses less digits than its factorization.

12957132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 668 counting only the distinct ones).

The product of its digits is 3780, while the sum is 30.

The square root of 12957132 is about 3599.6016446268. The cubic root of 12957132 is about 234.8747302777.

The spelling of 12957132 in words is "twelve million, nine hundred fifty-seven thousand, one hundred thirty-two".