915872 has 12 divisors (see below), whose sum is σ = 1803186. Its totient is φ = 457920.

The previous prime is 915869. The next prime is 915881. The reversal of 915872 is 278519.

It can be written as a sum of positive squares in only one way, i.e., 913936 + 1936 = 956^2 + 44^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 28621 = 915872 / (9 + 1 + 5 + 8 + 7 + 2).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14279 + ... + 14342.

2⁹¹⁵⁸⁷² is an apocalyptic number.

It is an amenable number.

915872 is a deficient number, since it is larger than the sum of its proper divisors (887314).

915872 is a wasteful number, since it uses less digits than its factorization.

915872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28631 (or 28623 counting only the distinct ones).

The product of its digits is 5040, while the sum is 32.

The square root of 915872 is about 957.0120166435. The cubic root of 915872 is about 97.1131990530.

The spelling of 915872 in words is "nine hundred fifteen thousand, eight hundred seventy-two".