115115860 has 24 divisors (see below), whose sum is σ = 242653320. Its totient is φ = 45873024.

The previous prime is 115115821. The next prime is 115115867. The reversal of 115115860 is 68511511.

It can be written as a sum of positive squares in 4 ways, for example, as 16630084 + 98485776 = 4078^2 + 9924^2 .

It is a super-2 number, since 2×115115860² = 26503322447079200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115115867) 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, 5319 + ... + 16078.

It is an arithmetic number, because the mean of its divisors is an integer number (10110555).

Almost surely, 2^115115860 is an apocalyptic number.

115115860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115115860 is an abundant number, since it is smaller than the sum of its proper divisors (127537460).

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

115115860 is a wasteful number, since it uses less digits than its factorization.

115115860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21675 (or 21673 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 28.

The square root of 115115860 is about 10729.2059352032. The cubic root of 115115860 is about 486.4576686461.

It can be divided in two parts, 11511 and 5860, that added together give a palindrome (17371).

The spelling of 115115860 in words is "one hundred fifteen million, one hundred fifteen thousand, eight hundred sixty".