13388715 has 24 divisors (see below), whose sum is σ = 23474880. Its totient is φ = 7058304.

The previous prime is 13388699. The next prime is 13388719. The reversal of 13388715 is 51788331.

It is not a de Polignac number, because 13388715 - 2⁴ = 13388699 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13388715.

It is not an unprimeable number, because it can be changed into a prime (13388719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2334 + ... + 5676.

It is an arithmetic number, because the mean of its divisors is an integer number (978120).

Almost surely, 2^13388715 is an apocalyptic number.

13388715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13388715 is a deficient number, since it is larger than the sum of its proper divisors (10086165).

13388715 is a wasteful number, since it uses less digits than its factorization.

13388715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3443 (or 3440 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 13388715 is about 3659.0593053406. The cubic root of 13388715 is about 237.4540779172.

The spelling of 13388715 in words is "thirteen million, three hundred eighty-eight thousand, seven hundred fifteen".