12809976 has 32 divisors (see below), whose sum is σ = 33909840. Its totient is φ = 4018688.

The previous prime is 12809969. The next prime is 12809983. The reversal of 12809976 is 67990821.

It is an interprime number because it is at equal distance from previous prime (12809969) and next prime (12809983).

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, 15291 + ... + 16106.

Almost surely, 2^12809976 is an apocalyptic number.

It is an amenable number.

12809976 is an abundant number, since it is smaller than the sum of its proper divisors (21099864).

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

12809976 is a wasteful number, since it uses less digits than its factorization.

12809976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31423 (or 31419 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 12809976 is about 3579.1026808405. The cubic root of 12809976 is about 233.9821741114.

The spelling of 12809976 in words is "twelve million, eight hundred nine thousand, nine hundred seventy-six".