12990808 has 16 divisors (see below), whose sum is σ = 24515280. Its totient is φ = 6453408.

The previous prime is 12990793. The next prime is 12990833. The reversal of 12990808 is 80809921.

It is a super-2 number, since 2×12990808² = 337522184985728, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3916 + ... + 6427.

It is an arithmetic number, because the mean of its divisors is an integer number (1532205).

Almost surely, 2^12990808 is an apocalyptic number.

It is an amenable number.

12990808 is a deficient number, since it is larger than the sum of its proper divisors (11524472).

12990808 is a wasteful number, since it uses less digits than its factorization.

12990808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10506 (or 10502 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 12990808 is about 3604.2763490054. The cubic root of 12990808 is about 235.0780365552.

The spelling of 12990808 in words is "twelve million, nine hundred ninety thousand, eight hundred eight".