12938656 has 24 divisors (see below), whose sum is σ = 26296704. Its totient is φ = 6260160.

The previous prime is 12938623. The next prime is 12938663. The reversal of 12938656 is 65683921.

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 3 ways as a sum of consecutive naturals, for example, 5530 + ... + 7513.

It is an arithmetic number, because the mean of its divisors is an integer number (1095696).

Almost surely, 2^12938656 is an apocalyptic number.

12938656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12938656 is an abundant number, since it is smaller than the sum of its proper divisors (13358048).

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

12938656 is a wasteful number, since it uses less digits than its factorization.

12938656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13084 (or 13076 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 12938656 is about 3597.0343340035. The cubic root of 12938656 is about 234.7630386424.

The spelling of 12938656 in words is "twelve million, nine hundred thirty-eight thousand, six hundred fifty-six".