13079815 has 24 divisors (see below), whose sum is σ = 18418752. Its totient is φ = 8890560.

The previous prime is 13079791. The next prime is 13079821. The reversal of 13079815 is 51897031.

It is a happy number.

13079815 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13079815 - 2⁷ = 13079687 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48130 + ... + 48400.

It is an arithmetic number, because the mean of its divisors is an integer number (767448).

Almost surely, 2^13079815 is an apocalyptic number.

13079815 is a deficient number, since it is larger than the sum of its proper divisors (5338937).

13079815 is a wasteful number, since it uses less digits than its factorization.

13079815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487 (or 480 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 13079815 is about 3616.6026876061. The cubic root of 13079815 is about 235.6136969908.

The spelling of 13079815 in words is "thirteen million, seventy-nine thousand, eight hundred fifteen".