115908520 has 96 divisors (see below), whose sum is σ = 326781000. Its totient is φ = 36675072.

The previous prime is 115908511. The next prime is 115908539. The reversal of 115908520 is 25809511.

It can be written as a sum of positive squares in 4 ways, for example, as 85636516 + 30272004 = 9254^2 + 5502^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23206 + ... + 27754.

Almost surely, 2^115908520 is an apocalyptic number.

115908520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115908520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163390500).

115908520 is an abundant number, since it is smaller than the sum of its proper divisors (210872480).

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

115908520 is a wasteful number, since it uses less digits than its factorization.

115908520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4587 (or 4576 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 31.

The square root of 115908520 is about 10766.0819242657. The cubic root of 115908520 is about 487.5716589818.

Subtracting from 115908520 its reverse (25809511), we obtain a palindrome (90099009).

The spelling of 115908520 in words is "one hundred fifteen million, nine hundred eight thousand, five hundred twenty".