12686944 has 24 divisors (see below), whose sum is σ = 25061400. Its totient is φ = 6322176.

The previous prime is 12686939. The next prime is 12686951. The reversal of 12686944 is 44968621.

It is a junction number, because it is equal to n+sod(n) for n = 12686897 and 12686906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13927 + ... + 14809.

It is an arithmetic number, because the mean of its divisors is an integer number (1044225).

Almost surely, 2^12686944 is an apocalyptic number.

It is an amenable number.

12686944 is a deficient number, since it is larger than the sum of its proper divisors (12374456).

12686944 is an equidigital number, since it uses as much as digits as its factorization.

12686944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342 (or 1334 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 12686944 is about 3561.8736642391. The cubic root of 12686944 is about 233.2306777455.

The spelling of 12686944 in words is "twelve million, six hundred eighty-six thousand, nine hundred forty-four".