90392220 has 48 divisors (see below), whose sum is σ = 281221920. Its totient is φ = 24104448.

The previous prime is 90392219. The next prime is 90392261. The reversal of 90392220 is 2229309.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83157 + ... + 84236.

It is an arithmetic number, because the mean of its divisors is an integer number (5858790).

Almost surely, 2^90392220 is an apocalyptic number.

90392220 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

90392220 is an abundant number, since it is smaller than the sum of its proper divisors (190829700).

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

90392220 is a wasteful number, since it uses less digits than its factorization.

90392220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167411 (or 167403 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 90392220 is about 9507.4823165757. The cubic root of 90392220 is about 448.7905299841.

The spelling of 90392220 in words is "ninety million, three hundred ninety-two thousand, two hundred twenty".