83183920 has 20 divisors (see below), whose sum is σ = 193402800. Its totient is φ = 33273536.

The previous prime is 83183911. The next prime is 83183927. The reversal of 83183920 is 2938138.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (83183927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 519820 + ... + 519979.

It is an arithmetic number, because the mean of its divisors is an integer number (9670140).

Almost surely, 2^83183920 is an apocalyptic number.

83183920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

83183920 is an abundant number, since it is smaller than the sum of its proper divisors (110218880).

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

83183920 is a wasteful number, since it uses less digits than its factorization.

83183920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039812 (or 1039806 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 83183920 is about 9120.5219148906. The cubic root of 83183920 is about 436.5290270573.

The spelling of 83183920 in words is "eighty-three million, one hundred eighty-three thousand, nine hundred twenty".