115787 has 12 divisors (see below), whose sum is σ = 143640. Its totient is φ = 92736.

The previous prime is 115783. The next prime is 115793. The reversal of 115787 is 787511.

It is not a de Polignac number, because 115787 - 2² = 115783 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 764 + ... + 902.

It is an arithmetic number, because the mean of its divisors is an integer number (11970).

2¹¹⁵⁷⁸⁷ is an apocalyptic number.

115787 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

115787 is the 278-th pentagonal number.

115787 is a deficient number, since it is larger than the sum of its proper divisors (27853).

115787 is a wasteful number, since it uses less digits than its factorization.

115787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 163 counting only the distinct ones).

The product of its digits is 1960, while the sum is 29.

The square root of 115787 is about 340.2748888766. The cubic root of 115787 is about 48.7401207244.

The spelling of 115787 in words is "one hundred fifteen thousand, seven hundred eighty-seven".