115817872 has 20 divisors (see below), whose sum is σ = 237597516. Its totient is φ = 54502400.

The previous prime is 115817869. The next prime is 115817887. The reversal of 115817872 is 278718511.

It can be written as a sum of positive squares in 2 ways, for example, as 65351056 + 50466816 = 8084^2 + 7104^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212629 + ... + 213172.

Almost surely, 2^115817872 is an apocalyptic number.

It is an amenable number.

115817872 is an abundant number, since it is smaller than the sum of its proper divisors (121779644).

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

115817872 is a wasteful number, since it uses less digits than its factorization.

115817872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425826 (or 425820 counting only the distinct ones).

The product of its digits is 31360, while the sum is 40.

The square root of 115817872 is about 10761.8712127585. The cubic root of 115817872 is about 487.4445215850. Note that the first 3 decimals are identical.

The spelling of 115817872 in words is "one hundred fifteen million, eight hundred seventeen thousand, eight hundred seventy-two".