12639116 has 12 divisors (see below), whose sum is σ = 25278288. Its totient is φ = 5416752.

The previous prime is 12639097. The next prime is 12639127. The reversal of 12639116 is 61193621.

12639116 is an admirable number.

It is a super-2 number, since 2×12639116² = 319494506522912, which contains 22 as substring.

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, 225671 + ... + 225726.

It is an arithmetic number, because the mean of its divisors is an integer number (2106524).

Almost surely, 2^12639116 is an apocalyptic number.

It is an amenable number.

12639116 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12639116 is a wasteful number, since it uses less digits than its factorization.

12639116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451408 (or 451406 counting only the distinct ones).

The product of its digits is 1944, while the sum is 29.

The square root of 12639116 is about 3555.1534425394. The cubic root of 12639116 is about 232.9372263615.

The spelling of 12639116 in words is "twelve million, six hundred thirty-nine thousand, one hundred sixteen".