15996315 has 16 divisors (see below), whose sum is σ = 25920000. Its totient is φ = 8422752.

The previous prime is 15996311. The next prime is 15996329. The reversal of 15996315 is 51369951.

It is not a de Polignac number, because 15996315 - 2² = 15996311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15996311) 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 15 ways as a sum of consecutive naturals, for example, 5565 + ... + 7934.

It is an arithmetic number, because the mean of its divisors is an integer number (1620000).

Almost surely, 2^15996315 is an apocalyptic number.

15996315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15996315 is a deficient number, since it is larger than the sum of its proper divisors (9923685).

15996315 is a wasteful number, since it uses less digits than its factorization.

15996315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13586.

The product of its digits is 36450, while the sum is 39.

The square root of 15996315 is about 3999.5393484750. The cubic root of 15996315 is about 251.9648634559.

The spelling of 15996315 in words is "fifteen million, nine hundred ninety-six thousand, three hundred fifteen".