115258978 has 32 divisors (see below), whose sum is σ = 187272000. Its totient is φ = 53035200.

The previous prime is 115258967. The next prime is 115259051. The reversal of 115258978 is 879852511.

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, 226188 + ... + 226696.

It is an arithmetic number, because the mean of its divisors is an integer number (5852250).

Almost surely, 2^115258978 is an apocalyptic number.

115258978 is a deficient number, since it is larger than the sum of its proper divisors (72013022).

115258978 is a wasteful number, since it uses less digits than its factorization.

115258978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690.

The product of its digits is 201600, while the sum is 46.

The square root of 115258978 is about 10735.8734157962. The cubic root of 115258978 is about 486.6591816159.

It can be divided in two parts, 11525 and 8978, that added together give a triangular number (20503 = T₂₀₂).

The spelling of 115258978 in words is "one hundred fifteen million, two hundred fifty-eight thousand, nine hundred seventy-eight".