12813996 has 24 divisors (see below), whose sum is σ = 32199664. Its totient is φ = 3942720.

The previous prime is 12813989. The next prime is 12814019. The reversal of 12813996 is 69931821.

It is a Harshad number since it is a multiple of its sum of digits (39).

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 7 ways as a sum of consecutive naturals, for example, 40915 + ... + 41226.

Almost surely, 2^12813996 is an apocalyptic number.

It is an amenable number.

12813996 is an abundant number, since it is smaller than the sum of its proper divisors (19385668).

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

12813996 is a wasteful number, since it uses less digits than its factorization.

12813996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82161 (or 82159 counting only the distinct ones).

The product of its digits is 23328, while the sum is 39.

The square root of 12813996 is about 3579.6642300640. The cubic root of 12813996 is about 234.0066474845.

The spelling of 12813996 in words is "twelve million, eight hundred thirteen thousand, nine hundred ninety-six".