12639296 has 28 divisors (see below), whose sum is σ = 26558748. Its totient is φ = 5947392.

The previous prime is 12639283. The next prime is 12639329. The reversal of 12639296 is 69293621.

It can be written as a sum of positive squares in 2 ways, for example, as 7182400 + 5456896 = 2680^2 + 2336^2 .

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, 4721 + ... + 6896.

Almost surely, 2^12639296 is an apocalyptic number.

12639296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12639296 is an abundant number, since it is smaller than the sum of its proper divisors (13919452).

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

12639296 is a wasteful number, since it uses less digits than its factorization.

12639296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11646 (or 11636 counting only the distinct ones).

The product of its digits is 34992, while the sum is 38.

The square root of 12639296 is about 3555.1787578123. The cubic root of 12639296 is about 232.9383321483.

The spelling of 12639296 in words is "twelve million, six hundred thirty-nine thousand, two hundred ninety-six".