83995220 has 24 divisors (see below), whose sum is σ = 179025504. Its totient is φ = 33096096.

The previous prime is 83995199. The next prime is 83995243. The reversal of 83995220 is 2259938.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30002 + ... + 32681.

It is an arithmetic number, because the mean of its divisors is an integer number (7459396).

Almost surely, 2^83995220 is an apocalyptic number.

It is an amenable number.

83995220 is an abundant number, since it is smaller than the sum of its proper divisors (95030284).

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

83995220 is a wasteful number, since it uses less digits than its factorization.

83995220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62759 (or 62757 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 83995220 is about 9164.8906158230. The cubic root of 83995220 is about 437.9436066481.

The spelling of 83995220 in words is "eighty-three million, nine hundred ninety-five thousand, two hundred twenty".