12918996 has 18 divisors (see below), whose sum is σ = 32656442. Its totient is φ = 4306320.

The previous prime is 12918991. The next prime is 12919001. The reversal of 12918996 is 69981921.

It is an interprime number because it is at equal distance from previous prime (12918991) and next prime (12919001).

It can be written as a sum of positive squares in only one way, i.e., 9548100 + 3370896 = 3090^2 + 1836^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12918991) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 179395 + ... + 179466.

Almost surely, 2^12918996 is an apocalyptic number.

It is an amenable number.

12918996 is an abundant number, since it is smaller than the sum of its proper divisors (19737446).

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

12918996 is a wasteful number, since it uses less digits than its factorization.

12918996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358871 (or 358866 counting only the distinct ones).

The product of its digits is 69984, while the sum is 45.

The square root of 12918996 is about 3594.3004882731. The cubic root of 12918996 is about 234.6440726281.

The spelling of 12918996 in words is "twelve million, nine hundred eighteen thousand, nine hundred ninety-six".