15399244 has 24 divisors (see below), whose sum is σ = 30891168. Its totient is φ = 6579840.

The previous prime is 15399187. The next prime is 15399257. The reversal of 15399244 is 44299351.

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, 12312 + ... + 13504.

It is an arithmetic number, because the mean of its divisors is an integer number (1287132).

Almost surely, 2^15399244 is an apocalyptic number.

15399244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

15399244 is an abundant number, since it is smaller than the sum of its proper divisors (15491924).

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

15399244 is a wasteful number, since it uses less digits than its factorization.

15399244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665 (or 1663 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The square root of 15399244 is about 3924.1870495684. The cubic root of 15399244 is about 248.7901222286.

The spelling of 15399244 in words is "fifteen million, three hundred ninety-nine thousand, two hundred forty-four".