12897928 has 16 divisors (see below), whose sum is σ = 24698880. Its totient is φ = 6311568.

The previous prime is 12897919. The next prime is 12897961. The reversal of 12897928 is 82979821.

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, 16776 + ... + 17527.

It is an arithmetic number, because the mean of its divisors is an integer number (1543680).

Almost surely, 2^12897928 is an apocalyptic number.

It is an amenable number.

12897928 is a deficient number, since it is larger than the sum of its proper divisors (11800952).

12897928 is a wasteful number, since it uses less digits than its factorization.

12897928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34356 (or 34352 counting only the distinct ones).

The product of its digits is 145152, while the sum is 46.

The square root of 12897928 is about 3591.3685413781. The cubic root of 12897928 is about 234.5164525200.

The spelling of 12897928 in words is "twelve million, eight hundred ninety-seven thousand, nine hundred twenty-eight".