12957644 has 12 divisors (see below), whose sum is σ = 25915344. Its totient is φ = 5553264.

The previous prime is 12957619. The next prime is 12957649. The reversal of 12957644 is 44675921.

12957644 is an admirable number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12957598 and 12957607.

It is not an unprimeable number, because it can be changed into a prime (12957649) 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, 231359 + ... + 231414.

It is an arithmetic number, because the mean of its divisors is an integer number (2159612).

Almost surely, 2^12957644 is an apocalyptic number.

12957644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12957644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12957644 is a wasteful number, since it uses less digits than its factorization.

12957644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462784 (or 462782 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 12957644 is about 3599.6727629050. The cubic root of 12957644 is about 234.8778239221.

The spelling of 12957644 in words is "twelve million, nine hundred fifty-seven thousand, six hundred forty-four".