15990968 has 16 divisors (see below), whose sum is σ = 34266480. Its totient is φ = 6853248.

The previous prime is 15990917. The next prime is 15990973. The reversal of 15990968 is 86909951.

It is a super-2 number, since 2×15990968² = 511422115154048, which contains 22 as substring.

It is a congruent number.

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, 142721 + ... + 142832.

It is an arithmetic number, because the mean of its divisors is an integer number (2141655).

Almost surely, 2^15990968 is an apocalyptic number.

It is an amenable number.

15990968 is an abundant number, since it is smaller than the sum of its proper divisors (18275512).

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

15990968 is a wasteful number, since it uses less digits than its factorization.

15990968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285566 (or 285562 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 47.

The square root of 15990968 is about 3998.8708406249. The cubic root of 15990968 is about 251.9367860254.

The spelling of 15990968 in words is "fifteen million, nine hundred ninety thousand, nine hundred sixty-eight".