115509992 has 32 divisors (see below), whose sum is σ = 233786280. Its totient is φ = 53187840.

The previous prime is 115509931. The next prime is 115510001. The reversal of 115509992 is 299905511.

It can be written as a sum of positive squares in 4 ways, for example, as 75238276 + 40271716 = 8674^2 + 6346^2 .

It is a super-3 number, since 3×115509992³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55238 + ... + 57290.

Almost surely, 2^115509992 is an apocalyptic number.

It is an amenable number.

115509992 is an abundant number, since it is smaller than the sum of its proper divisors (118276288).

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

115509992 is a wasteful number, since it uses less digits than its factorization.

115509992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2613 (or 2609 counting only the distinct ones).

The product of its (nonzero) digits is 36450, while the sum is 41.

The square root of 115509992 is about 10747.5574899602. The cubic root of 115509992 is about 487.0122118013.

The spelling of 115509992 in words is "one hundred fifteen million, five hundred nine thousand, nine hundred ninety-two".