15979488 has 144 divisors (see below), whose sum is σ = 50561280. Its totient is φ = 4402944.

The previous prime is 15979471. The next prime is 15979559. The reversal of 15979488 is 88497951.

It is a self number, because there is not a number n which added to its sum of digits gives 15979488.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 202233 + ... + 202311.

It is an arithmetic number, because the mean of its divisors is an integer number (351120).

Almost surely, 2^15979488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15979488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25280640).

15979488 is an abundant number, since it is smaller than the sum of its proper divisors (34581792).

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

15979488 is a wasteful number, since it uses less digits than its factorization.

15979488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 134 counting only the distinct ones).

The product of its digits is 725760, while the sum is 51.

The square root of 15979488 is about 3997.4351777108. The cubic root of 15979488 is about 251.8764826780.

The spelling of 15979488 in words is "fifteen million, nine hundred seventy-nine thousand, four hundred eighty-eight".