15971488 has 24 divisors (see below), whose sum is σ = 33863508. Its totient is φ = 7371264.

The previous prime is 15971471. The next prime is 15971513. The reversal of 15971488 is 88417951.

It is a happy number.

15971488 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 14653584 + 1317904 = 3828^2 + 1148^2 .

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, 18781 + ... + 19612.

Almost surely, 2^15971488 is an apocalyptic number.

It is an amenable number.

15971488 is an abundant number, since it is smaller than the sum of its proper divisors (17892020).

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

15971488 is a wasteful number, since it uses less digits than its factorization.

15971488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38416 (or 38408 counting only the distinct ones).

The product of its digits is 80640, while the sum is 43.

The square root of 15971488 is about 3996.4344108217. The cubic root of 15971488 is about 251.8344423610.

The spelling of 15971488 in words is "fifteen million, nine hundred seventy-one thousand, four hundred eighty-eight".