12912988 has 24 divisors (see below), whose sum is σ = 25449984. Its totient is φ = 5679600.

The previous prime is 12912971. The next prime is 12913003. The reversal of 12912988 is 88921921.

It is a self number, because there is not a number n which added to its sum of digits gives 12912988.

It is a congruent 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, 3370 + ... + 6097.

It is an arithmetic number, because the mean of its divisors is an integer number (1060416).

Almost surely, 2^12912988 is an apocalyptic number.

It is an amenable number.

12912988 is a deficient number, since it is larger than the sum of its proper divisors (12536996).

12912988 is a wasteful number, since it uses less digits than its factorization.

12912988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9513 (or 9511 counting only the distinct ones).

The product of its digits is 20736, while the sum is 40.

The square root of 12912988 is about 3593.4646234519. The cubic root of 12912988 is about 234.6076931195.

The spelling of 12912988 in words is "twelve million, nine hundred twelve thousand, nine hundred eighty-eight".