15399136 has 24 divisors (see below), whose sum is σ = 30663360. Its totient is φ = 7611648.

The previous prime is 15399133. The next prime is 15399143. The reversal of 15399136 is 63199351.

It is a junction number, because it is equal to n+sod(n) for n = 15399095 and 15399104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15399133) 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 3 ways as a sum of consecutive naturals, for example, 145 + ... + 5551.

It is an arithmetic number, because the mean of its divisors is an integer number (1277640).

Almost surely, 2^15399136 is an apocalyptic number.

15399136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

15399136 is a deficient number, since it is larger than the sum of its proper divisors (15264224).

15399136 is an equidigital number, since it uses as much as digits as its factorization.

15399136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5506 (or 5498 counting only the distinct ones).

The product of its digits is 21870, while the sum is 37.

The square root of 15399136 is about 3924.1732887323. The cubic root of 15399136 is about 248.7895406114.

The spelling of 15399136 in words is "fifteen million, three hundred ninety-nine thousand, one hundred thirty-six".