115980 has 24 divisors (see below), whose sum is σ = 324912. Its totient is φ = 30912.

The previous prime is 115979. The next prime is 115981. The reversal of 115980 is 89511.

It is an interprime number because it is at equal distance from previous prime (115979) and next prime (115981).

It is a self number, because there is not a number n which added to its sum of digits gives 115980.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 115980.

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 7 ways as a sum of consecutive naturals, for example, 907 + ... + 1026.

It is an arithmetic number, because the mean of its divisors is an integer number (13538).

2¹¹⁵⁹⁸⁰ is an apocalyptic number.

115980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115980 is an abundant number, since it is smaller than the sum of its proper divisors (208932).

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

115980 is a wasteful number, since it uses less digits than its factorization.

115980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1945 (or 1943 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 115980 is about 340.5583650419. The cubic root of 115980 is about 48.7671865767.

The spelling of 115980 in words is "one hundred fifteen thousand, nine hundred eighty".