83115880 has 32 divisors (see below), whose sum is σ = 196855200. Its totient is φ = 31496256.

The previous prime is 83115863. The next prime is 83115883. The reversal of 83115880 is 8851138.

It is not an unprimeable number, because it can be changed into a prime (83115883) 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, 53922 + ... + 55441.

It is an arithmetic number, because the mean of its divisors is an integer number (6151725).

Almost surely, 2^83115880 is an apocalyptic number.

It is an amenable number.

83115880 is an abundant number, since it is smaller than the sum of its proper divisors (113739320).

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

83115880 is a wasteful number, since it uses less digits than its factorization.

83115880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109393 (or 109389 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 34.

The square root of 83115880 is about 9116.7911021368. The cubic root of 83115880 is about 436.4099754556.

The spelling of 83115880 in words is "eighty-three million, one hundred fifteen thousand, eight hundred eighty".