116815278 has 16 divisors (see below), whose sum is σ = 233958096. Its totient is φ = 38883840.

The previous prime is 116815271. The next prime is 116815289. The reversal of 116815278 is 872518611.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116815271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8883 + ... + 17678.

It is an arithmetic number, because the mean of its divisors is an integer number (14622381).

Almost surely, 2^116815278 is an apocalyptic number.

116815278 is an abundant number, since it is smaller than the sum of its proper divisors (117142818).

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

116815278 is a wasteful number, since it uses less digits than its factorization.

116815278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27299.

The product of its digits is 26880, while the sum is 39.

The square root of 116815278 is about 10808.1116759589. Note that the first 3 decimals coincide. The cubic root of 116815278 is about 488.8397901067.

The spelling of 116815278 in words is "one hundred sixteen million, eight hundred fifteen thousand, two hundred seventy-eight".