115891836 has 12 divisors (see below), whose sum is σ = 270414312. Its totient is φ = 38630608.

The previous prime is 115891823. The next prime is 115891879. The reversal of 115891836 is 638198511.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4828815 + ... + 4828838.

It is an arithmetic number, because the mean of its divisors is an integer number (22534526).

Almost surely, 2^115891836 is an apocalyptic number.

It is an amenable number.

115891836 is an abundant number, since it is smaller than the sum of its proper divisors (154522476).

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

115891836 is a wasteful number, since it uses less digits than its factorization.

115891836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9657660 (or 9657658 counting only the distinct ones).

The product of its digits is 51840, while the sum is 42.

The square root of 115891836 is about 10765.3070555372. The cubic root of 115891836 is about 487.5482639921.

The spelling of 115891836 in words is "one hundred fifteen million, eight hundred ninety-one thousand, eight hundred thirty-six".