12791568 has 20 divisors (see below), whose sum is σ = 33045008. Its totient is φ = 4263840.

The previous prime is 12791563. The next prime is 12791587. The reversal of 12791568 is 86519721.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (12791563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133198 + ... + 133293.

Almost surely, 2^12791568 is an apocalyptic number.

It is an amenable number.

12791568 is an abundant number, since it is smaller than the sum of its proper divisors (20253440).

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

12791568 is a wasteful number, since it uses less digits than its factorization.

12791568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266502 (or 266496 counting only the distinct ones).

The product of its digits is 30240, while the sum is 39.

The square root of 12791568 is about 3576.5301620425. The cubic root of 12791568 is about 233.8700425290.

The spelling of 12791568 in words is "twelve million, seven hundred ninety-one thousand, five hundred sixty-eight".