13113872 has 10 divisors (see below), whose sum is σ = 25408158. Its totient is φ = 6556928.

The previous prime is 13113811. The next prime is 13113929. The reversal of 13113872 is 27831131.

It can be written as a sum of positive squares in only one way, i.e., 13075456 + 38416 = 3616^2 + 196^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 409793 + ... + 409824.

Almost surely, 2^13113872 is an apocalyptic number.

It is an amenable number.

13113872 is a deficient number, since it is larger than the sum of its proper divisors (12294286).

13113872 is an equidigital number, since it uses as much as digits as its factorization.

13113872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819625 (or 819619 counting only the distinct ones).

The product of its digits is 1008, while the sum is 26.

The square root of 13113872 is about 3621.3080509672. The cubic root of 13113872 is about 235.8180154063.

The spelling of 13113872 in words is "thirteen million, one hundred thirteen thousand, eight hundred seventy-two".