13157968 has 20 divisors (see below), whose sum is σ = 25631668. Its totient is φ = 6543360.

The previous prime is 13157959. The next prime is 13157971. The reversal of 13157968 is 86975131.

It can be written as a sum of positive squares in 2 ways, for example, as 8714304 + 4443664 = 2952^2 + 2108^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13157968.

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, 958 + ... + 5218.

Almost surely, 2^13157968 is an apocalyptic number.

It is an amenable number.

13157968 is a deficient number, since it is larger than the sum of its proper divisors (12473700).

13157968 is a wasteful number, since it uses less digits than its factorization.

13157968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4462 (or 4456 counting only the distinct ones).

The product of its digits is 45360, while the sum is 40.

The square root of 13157968 is about 3627.3913491654. The cubic root of 13157968 is about 236.0820360210.

The spelling of 13157968 in words is "thirteen million, one hundred fifty-seven thousand, nine hundred sixty-eight".