115805916 has 48 divisors (see below), whose sum is σ = 303878400. Its totient is φ = 38133936.

The previous prime is 115805891. The next prime is 115805927. The reversal of 115805916 is 619508511.

115805916 is a `hidden beast` number, since 11 + 58 + 0 + 591 + 6 = 666.

It is a super-2 number, since 2×115805916² = 26822020361198112, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2505 + ... + 15423.

It is an arithmetic number, because the mean of its divisors is an integer number (6330800).

Almost surely, 2^115805916 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115805916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151939200).

115805916 is an abundant number, since it is smaller than the sum of its proper divisors (188072484).

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

115805916 is a wasteful number, since it uses less digits than its factorization.

115805916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13015 (or 13007 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 36.

The square root of 115805916 is about 10761.3157188143. The cubic root of 115805916 is about 487.4277478720.

The spelling of 115805916 in words is "one hundred fifteen million, eight hundred five thousand, nine hundred sixteen".