115538720 has 48 divisors (see below), whose sum is σ = 297779328. Its totient is φ = 42013440.

The previous prime is 115538713. The next prime is 115538723. The reversal of 115538720 is 27835511.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (115538723) 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, 31064 + ... + 34583.

It is an arithmetic number, because the mean of its divisors is an integer number (6203736).

Almost surely, 2^115538720 is an apocalyptic number.

115538720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115538720 is an abundant number, since it is smaller than the sum of its proper divisors (182240608).

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

115538720 is a wasteful number, since it uses less digits than its factorization.

115538720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65673 (or 65665 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 115538720 is about 10748.8938965830. The cubic root of 115538720 is about 487.0525827016.

It can be divided in two parts, 115 and 538720, that added together give a palindrome (538835).

The spelling of 115538720 in words is "one hundred fifteen million, five hundred thirty-eight thousand, seven hundred twenty".