13015320 has 32 divisors (see below), whose sum is σ = 39046320. Its totient is φ = 3470720.

The previous prime is 13015291. The next prime is 13015333. The reversal of 13015320 is 2351031.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 13015320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54111 + ... + 54350.

Almost surely, 2^13015320 is an apocalyptic number.

13015320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13015320 is an abundant number, since it is smaller than the sum of its proper divisors (26031000).

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

13015320 is a wasteful number, since it uses less digits than its factorization.

13015320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108475 (or 108471 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 13015320 is about 3607.6751516732. The cubic root of 13015320 is about 235.2257977626.

Adding to 13015320 its reverse (2351031), we get a palindrome (15366351).

The spelling of 13015320 in words is "thirteen million, fifteen thousand, three hundred twenty".