12818986 has 16 divisors (see below), whose sum is σ = 21063240. Its totient is φ = 5824000.

The previous prime is 12818959. The next prime is 12819007. The reversal of 12818986 is 68981821.

It can be written as a sum of positive squares in 4 ways, for example, as 9090225 + 3728761 = 3015^2 + 1931^2 .

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, 5515 + ... + 7486.

Almost surely, 2^12818986 is an apocalyptic number.

12818986 is a deficient number, since it is larger than the sum of its proper divisors (8244254).

12818986 is a wasteful number, since it uses less digits than its factorization.

12818986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13049.

The product of its digits is 55296, while the sum is 43.

The square root of 12818986 is about 3580.3611549675. The cubic root of 12818986 is about 234.0370190051.

The spelling of 12818986 in words is "twelve million, eight hundred eighteen thousand, nine hundred eighty-six".