115921072 has 20 divisors (see below), whose sum is σ = 225900720. Its totient is φ = 57624128.

The previous prime is 115921067. The next prime is 115921073. The reversal of 115921072 is 270129511.

It is a self number, because there is not a number n which added to its sum of digits gives 115921072.

It is not an unprimeable number, because it can be changed into a prime (115921073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18172 + ... + 23707.

It is an arithmetic number, because the mean of its divisors is an integer number (11295036).

Almost surely, 2^115921072 is an apocalyptic number.

It is an amenable number.

115921072 is a deficient number, since it is larger than the sum of its proper divisors (109979648).

115921072 is a wasteful number, since it uses less digits than its factorization.

115921072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42060 (or 42054 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 115921072 is about 10766.6648503610. The cubic root of 115921072 is about 487.5892584317.

The spelling of 115921072 in words is "one hundred fifteen million, nine hundred twenty-one thousand, seventy-two".