90192320 has 56 divisors (see below), whose sum is σ = 222199200. Its totient is φ = 34829312.

The previous prime is 90192317. The next prime is 90192329. The reversal of 90192320 is 2329109.

It is a self number, because there is not a number n which added to its sum of digits gives 90192320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90192329) 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, 4421 + ... + 14139.

Almost surely, 2^90192320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90192320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111099600).

90192320 is an abundant number, since it is smaller than the sum of its proper divisors (132006880).

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

90192320 is a wasteful number, since it uses less digits than its factorization.

90192320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9765 (or 9755 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 90192320 is about 9496.9637253177. The cubic root of 90192320 is about 448.4594563543.

The spelling of 90192320 in words is "ninety million, one hundred ninety-two thousand, three hundred twenty".