15887872 has 160 divisors (see below), whose sum is σ = 43997184. Its totient is φ = 5529600.

The previous prime is 15887867. The next prime is 15887881. The reversal of 15887872 is 27878851.

It is a happy number.

Its product of digits (250880) is a multiple of the sum of its prime divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 512497 + ... + 512527.

Almost surely, 2^15887872 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 15887872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21998592).

15887872 is an abundant number, since it is smaller than the sum of its proper divisors (28109312).

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

15887872 is a wasteful number, since it uses less digits than its factorization.

15887872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 64 counting only the distinct ones).

The product of its digits is 250880, while the sum is 46.

The square root of 15887872 is about 3985.9593575449. The cubic root of 15887872 is about 251.3941944342.

The spelling of 15887872 in words is "fifteen million, eight hundred eighty-seven thousand, eight hundred seventy-two".