12957056 has 32 divisors (see below), whose sum is σ = 29502480. Its totient is φ = 5552640.

The previous prime is 12957041. The next prime is 12957059. The reversal of 12957056 is 65075921.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12957059) 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, 6335 + ... + 8126.

Almost surely, 2^12957056 is an apocalyptic number.

12957056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12957056 is an abundant number, since it is smaller than the sum of its proper divisors (16545424).

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

12957056 is an equidigital number, since it uses as much as digits as its factorization.

12957056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14482 (or 14470 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 12957056 is about 3599.5910878876. The cubic root of 12957056 is about 234.8742710579.

The spelling of 12957056 in words is "twelve million, nine hundred fifty-seven thousand, fifty-six".