15291872 has 48 divisors (see below), whose sum is σ = 31933440. Its totient is φ = 7193472.

The previous prime is 15291853. The next prime is 15291883. The reversal of 15291872 is 27819251.

15291872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58013 + ... + 58275.

It is an arithmetic number, because the mean of its divisors is an integer number (665280).

Almost surely, 2^15291872 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 15291872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15966720).

15291872 is an abundant number, since it is smaller than the sum of its proper divisors (16641568).

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

15291872 is a wasteful number, since it uses less digits than its factorization.

15291872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375 (or 367 counting only the distinct ones).

The product of its digits is 10080, while the sum is 35.

The square root of 15291872 is about 3910.4823231924. The cubic root of 15291872 is about 248.2105392146.

The spelling of 15291872 in words is "fifteen million, two hundred ninety-one thousand, eight hundred seventy-two".