15239913 has 12 divisors (see below), whose sum is σ = 22003920. Its totient is φ = 9378096.

The previous prime is 15239899. The next prime is 15239921. The reversal of 15239913 is 31993251.

15239913 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 15239913 - 2⁹ = 15239401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15239963) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14523 + ... + 15536.

It is an arithmetic number, because the mean of its divisors is an integer number (1833660).

Almost surely, 2^15239913 is an apocalyptic number.

15239913 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

15239913 is a deficient number, since it is larger than the sum of its proper divisors (6764007).

15239913 is a wasteful number, since it uses less digits than its factorization.

15239913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30088 (or 30075 counting only the distinct ones).

The product of its digits is 7290, while the sum is 33.

The square root of 15239913 is about 3903.8331163102. The cubic root of 15239913 is about 247.9290954514.

The spelling of 15239913 in words is "fifteen million, two hundred thirty-nine thousand, nine hundred thirteen".