115591888 has 10 divisors (see below), whose sum is σ = 223959314. Its totient is φ = 57795936.

The previous prime is 115591873. The next prime is 115591909. The reversal of 115591888 is 888195511.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 95413824 + 20178064 = 9768^2 + 4492^2 .

It is a super-2 number, since 2×115591888² = 26722969142809088, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3612231 + ... + 3612262.

Almost surely, 2^115591888 is an apocalyptic number.

It is an amenable number.

115591888 is a deficient number, since it is larger than the sum of its proper divisors (108367426).

115591888 is an equidigital number, since it uses as much as digits as its factorization.

115591888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7224501 (or 7224495 counting only the distinct ones).

The product of its digits is 115200, while the sum is 46.

The square root of 115591888 is about 10751.3667968310. The cubic root of 115591888 is about 487.1272810093.

The spelling of 115591888 in words is "one hundred fifteen million, five hundred ninety-one thousand, eight hundred eighty-eight".