115806 has 8 divisors (see below), whose sum is σ = 231624. Its totient is φ = 38600.

The previous prime is 115793. The next prime is 115807. The reversal of 115806 is 608511.

It is a sphenic number, since it is the product of 3 distinct primes.

115806 is an admirable number.

It is a super-2 number, since 2×115806² = 26822059272, which contains 22 as substring.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115807) by changing a digit.

115806 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9645 + ... + 9656.

It is an arithmetic number, because the mean of its divisors is an integer number (28953).

2¹¹⁵⁸⁰⁶ is an apocalyptic number.

115806 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

115806 is a wasteful number, since it uses less digits than its factorization.

115806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19306.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 115806 is about 340.3028063358. The cubic root of 115806 is about 48.7427865724.

The spelling of 115806 in words is "one hundred fifteen thousand, eight hundred six".