12728996 has 24 divisors (see below), whose sum is σ = 25623360. Its totient is φ = 5419872.

The previous prime is 12728987. The next prime is 12729029. The reversal of 12728996 is 69982721.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3170 + ... + 5958.

It is an arithmetic number, because the mean of its divisors is an integer number (1067640).

Almost surely, 2^12728996 is an apocalyptic number.

It is an amenable number.

12728996 is an abundant number, since it is smaller than the sum of its proper divisors (12894364).

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

12728996 is a wasteful number, since it uses less digits than its factorization.

12728996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2963 (or 2961 counting only the distinct ones).

The product of its digits is 108864, while the sum is 44.

The square root of 12728996 is about 3567.7718536924. The cubic root of 12728996 is about 233.4880814744.

The spelling of 12728996 in words is "twelve million, seven hundred twenty-eight thousand, nine hundred ninety-six".