83134878 has 16 divisors (see below), whose sum is σ = 166962576. Its totient is φ = 27596160.

The previous prime is 83134871. The next prime is 83134889. The reversal of 83134878 is 87843138.

It is a super-2 number, since 2×83134878² = 13822815880149768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83134871) 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, 27301 + ... + 30192.

It is an arithmetic number, because the mean of its divisors is an integer number (10435161).

Almost surely, 2^83134878 is an apocalyptic number.

83134878 is an abundant number, since it is smaller than the sum of its proper divisors (83827698).

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

83134878 is a wasteful number, since it uses less digits than its factorization.

83134878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57739.

The product of its digits is 129024, while the sum is 42.

The square root of 83134878 is about 9117.8329662261. The cubic root of 83134878 is about 436.4432233544.

The spelling of 83134878 in words is "eighty-three million, one hundred thirty-four thousand, eight hundred seventy-eight".