15990316 has 12 divisors (see below), whose sum is σ = 28204288. Its totient is φ = 7931952.

The previous prime is 15990307. The next prime is 15990323. The reversal of 15990316 is 61309951.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15231 + ... + 16246.

Almost surely, 2^15990316 is an apocalyptic number.

It is an amenable number.

15990316 is a deficient number, since it is larger than the sum of its proper divisors (12213972).

15990316 is a wasteful number, since it uses less digits than its factorization.

15990316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31608 (or 31606 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 15990316 is about 3998.7893167808. The cubic root of 15990316 is about 251.9333619046.

The spelling of 15990316 in words is "fifteen million, nine hundred ninety thousand, three hundred sixteen".