115865600 has 144 divisors (see below), whose sum is σ = 300605760. Its totient is φ = 44236800.

The previous prime is 115865599. The next prime is 115865647. The reversal of 115865600 is 6568511.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1587164 + ... + 1587236.

It is an arithmetic number, because the mean of its divisors is an integer number (2087540).

Almost surely, 2^115865600 is an apocalyptic number.

115865600 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 115865600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150302880).

115865600 is an abundant number, since it is smaller than the sum of its proper divisors (184740160).

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

115865600 is an equidigital number, since it uses as much as digits as its factorization.

115865600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 115865600 is about 10764.0884425947. The cubic root of 115865600 is about 487.5114702539.

The spelling of 115865600 in words is "one hundred fifteen million, eight hundred sixty-five thousand, six hundred".