12728944 has 20 divisors (see below), whose sum is σ = 24846624. Its totient is φ = 6316928.

The previous prime is 12728939. The next prime is 12728977. The reversal of 12728944 is 44982721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 712 + ... + 5095.

Almost surely, 2^12728944 is an apocalyptic number.

It is an amenable number.

12728944 is a deficient number, since it is larger than the sum of its proper divisors (12117680).

12728944 is a wasteful number, since it uses less digits than its factorization.

12728944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5952 (or 5946 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 12728944 is about 3567.7645662235. The cubic root of 12728944 is about 233.4877635284.

The spelling of 12728944 in words is "twelve million, seven hundred twenty-eight thousand, nine hundred forty-four".