115998 has 8 divisors (see below), whose sum is σ = 232008. Its totient is φ = 38664.

The previous prime is 115987. The next prime is 116009. The reversal of 115998 is 899511.

It is an interprime number because it is at equal distance from previous prime (115987) and next prime (116009).

It is a sphenic number, since it is the product of 3 distinct primes.

115998 is an admirable number.

It is a congruent number.

It is an unprimeable number.

115998 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9661 + ... + 9672.

It is an arithmetic number, because the mean of its divisors is an integer number (29001).

2¹¹⁵⁹⁹⁸ is an apocalyptic number.

115998 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

115998 is a wasteful number, since it uses less digits than its factorization.

115998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19338.

The product of its digits is 3240, while the sum is 33.

The square root of 115998 is about 340.5847912048. The cubic root of 115998 is about 48.7697093218.

The spelling of 115998 in words is "one hundred fifteen thousand, nine hundred ninety-eight".