15981496 has 16 divisors (see below), whose sum is σ = 31728240. Its totient is φ = 7520640.

The previous prime is 15981419. The next prime is 15981541. The reversal of 15981496 is 69418951.

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, 58620 + ... + 58891.

It is an arithmetic number, because the mean of its divisors is an integer number (1983015).

Almost surely, 2^15981496 is an apocalyptic number.

It is an amenable number.

15981496 is a deficient number, since it is larger than the sum of its proper divisors (15746744).

15981496 is a wasteful number, since it uses less digits than its factorization.

15981496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117534 (or 117530 counting only the distinct ones).

The product of its digits is 77760, while the sum is 43.

The square root of 15981496 is about 3997.6863308669. The cubic root of 15981496 is about 251.8870325945.

The spelling of 15981496 in words is "fifteen million, nine hundred eighty-one thousand, four hundred ninety-six".