115913872 has 20 divisors (see below), whose sum is σ = 225144940. Its totient is φ = 57811968.

The previous prime is 115913869. The next prime is 115913873. The reversal of 115913872 is 278319511.

It can be written as a sum of positive squares in 2 ways, for example, as 107246736 + 8667136 = 10356^2 + 2944^2 .

It is not an unprimeable number, because it can be changed into a prime (115913873) 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, 2313 + ... + 15400.

It is an arithmetic number, because the mean of its divisors is an integer number (11257247).

Almost surely, 2^115913872 is an apocalyptic number.

It is an amenable number.

115913872 is a deficient number, since it is larger than the sum of its proper divisors (109231068).

115913872 is a wasteful number, since it uses less digits than its factorization.

115913872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18130 (or 18124 counting only the distinct ones).

The product of its digits is 15120, while the sum is 37.

The square root of 115913872 is about 10766.3304797874. The cubic root of 115913872 is about 487.5791633003.

The spelling of 115913872 in words is "one hundred fifteen million, nine hundred thirteen thousand, eight hundred seventy-two".