83431768 has 32 divisors (see below), whose sum is σ = 182592000. Its totient is φ = 34994592.

The previous prime is 83431763. The next prime is 83431771. The reversal of 83431768 is 86713438.

It is a self number, because there is not a number n which added to its sum of digits gives 83431768.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83431763) 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, 13218 + ... + 18481.

It is an arithmetic number, because the mean of its divisors is an integer number (5706000).

Almost surely, 2^83431768 is an apocalyptic number.

It is an amenable number.

83431768 is an abundant number, since it is smaller than the sum of its proper divisors (99160232).

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

83431768 is a wasteful number, since it uses less digits than its factorization.

83431768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31759 (or 31755 counting only the distinct ones).

The product of its digits is 96768, while the sum is 40.

The square root of 83431768 is about 9134.0991893016. The cubic root of 83431768 is about 436.9621459006.

The spelling of 83431768 in words is "eighty-three million, four hundred thirty-one thousand, seven hundred sixty-eight".