115891488 has 72 divisors (see below), whose sum is σ = 346928400. Its totient is φ = 36595584.

The previous prime is 115891483. The next prime is 115891553. The reversal of 115891488 is 884198511.

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (115891481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5118 + ... + 16061.

It is an arithmetic number, because the mean of its divisors is an integer number (4818450).

Almost surely, 2^115891488 is an apocalyptic number.

115891488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

115891488 is an abundant number, since it is smaller than the sum of its proper divisors (231036912).

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

115891488 is a wasteful number, since it uses less digits than its factorization.

115891488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21214 (or 21203 counting only the distinct ones).

The product of its digits is 92160, while the sum is 45.

The square root of 115891488 is about 10765.2908924933. The cubic root of 115891488 is about 487.5477759883.

The spelling of 115891488 in words is "one hundred fifteen million, eight hundred ninety-one thousand, four hundred eighty-eight".