12976638 has 16 divisors (see below), whose sum is σ = 26126976. Its totient is φ = 4296600.

The previous prime is 12976567. The next prime is 12976643. The reversal of 12976638 is 83667921.

It is a happy number.

12976638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12976638.

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, 6256 + ... + 8067.

It is an arithmetic number, because the mean of its divisors is an integer number (1632936).

Almost surely, 2^12976638 is an apocalyptic number.

12976638 is an abundant number, since it is smaller than the sum of its proper divisors (13150338).

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

12976638 is a wasteful number, since it uses less digits than its factorization.

12976638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14479.

The product of its digits is 108864, while the sum is 42.

The square root of 12976638 is about 3602.3100921492. The cubic root of 12976638 is about 234.9925333375.

It can be divided in two parts, 129 and 76638, that added together give a palindrome (76767).

The spelling of 12976638 in words is "twelve million, nine hundred seventy-six thousand, six hundred thirty-eight".