12957756 has 36 divisors (see below), whose sum is σ = 35172648. Its totient is φ = 3702048.

The previous prime is 12957739. The next prime is 12957761. The reversal of 12957756 is 65775921.

12957756 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10431 + ... + 11606.

It is an arithmetic number, because the mean of its divisors is an integer number (977018).

Almost surely, 2^12957756 is an apocalyptic number.

It is an amenable number.

12957756 is an abundant number, since it is smaller than the sum of its proper divisors (22214892).

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

12957756 is a wasteful number, since it uses less digits than its factorization.

12957756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22058 (or 22049 counting only the distinct ones).

The product of its digits is 132300, while the sum is 42.

The square root of 12957756 is about 3599.6883198410. The cubic root of 12957756 is about 234.8785006460.

The spelling of 12957756 in words is "twelve million, nine hundred fifty-seven thousand, seven hundred fifty-six".