115396778 has 16 divisors (see below), whose sum is σ = 202424640. Its totient is φ = 48305376.

The previous prime is 115396769. The next prime is 115396789. The reversal of 115396778 is 877693511.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95243 + ... + 96446.

It is an arithmetic number, because the mean of its divisors is an integer number (12651540).

Almost surely, 2^115396778 is an apocalyptic number.

115396778 is a deficient number, since it is larger than the sum of its proper divisors (87027862).

115396778 is a wasteful number, since it uses less digits than its factorization.

115396778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191741.

The product of its digits is 317520, while the sum is 47.

The square root of 115396778 is about 10742.2892346092. The cubic root of 115396778 is about 486.8530491668.

The spelling of 115396778 in words is "one hundred fifteen million, three hundred ninety-six thousand, seven hundred seventy-eight".