115868880 has 100 divisors (see below), whose sum is σ = 402452292. Its totient is φ = 30896640.

The previous prime is 115868869. The next prime is 115868881. The reversal of 115868880 is 88868511.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 42458256 + 73410624 = 6516^2 + 8568^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115868881) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2461 + ... + 15420.

Almost surely, 2^115868880 is an apocalyptic number.

115868880 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 115868880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201226146).

115868880 is an abundant number, since it is smaller than the sum of its proper divisors (286583412).

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

115868880 is a wasteful number, since it uses less digits than its factorization.

115868880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17906 (or 17891 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 45.

The square root of 115868880 is about 10764.2407999821. The cubic root of 115868880 is about 487.5160704761.

The spelling of 115868880 in words is "one hundred fifteen million, eight hundred sixty-eight thousand, eight hundred eighty".