115689984 has 80 divisors (see below), whose sum is σ = 311483040. Its totient is φ = 38154240.

The previous prime is 115689979. The next prime is 115689989. The reversal of 115689984 is 489986511.

It is an interprime number because it is at equal distance from previous prime (115689979) and next prime (115689989).

It is not an unprimeable number, because it can be changed into a prime (115689989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167079 + ... + 167769.

It is an arithmetic number, because the mean of its divisors is an integer number (3893538).

Almost surely, 2^115689984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115689984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155741520).

115689984 is an abundant number, since it is smaller than the sum of its proper divisors (195793056).

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

115689984 is an equidigital number, since it uses as much as digits as its factorization.

115689984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821 (or 805 counting only the distinct ones).

The product of its digits is 622080, while the sum is 51.

The square root of 115689984 is about 10755.9278539789. The cubic root of 115689984 is about 487.2650407531.

The spelling of 115689984 in words is "one hundred fifteen million, six hundred eighty-nine thousand, nine hundred eighty-four".