115988 has 12 divisors (see below), whose sum is σ = 205632. Its totient is φ = 57240.

The previous prime is 115987. The next prime is 116009. The reversal of 115988 is 889511.

It is a happy number.

It is a super-2 number, since 2×115988² = 26906432288, which contains 22 as substring.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 293 + ... + 563.

It is an arithmetic number, because the mean of its divisors is an integer number (17136).

2¹¹⁵⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

115988 is a deficient number, since it is larger than the sum of its proper divisors (89644).

115988 is a wasteful number, since it uses less digits than its factorization.

115988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382 (or 380 counting only the distinct ones).

The product of its digits is 2880, while the sum is 32.

The square root of 115988 is about 340.5701102563. The cubic root of 115988 is about 48.7683078290.

The spelling of 115988 in words is "one hundred fifteen thousand, nine hundred eighty-eight".