90244320 has 96 divisors (see below), whose sum is σ = 285858720. Its totient is φ = 23930880.

The previous prime is 90244303. The next prime is 90244333. The reversal of 90244320 is 2344209.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109510 + ... + 110330.

It is an arithmetic number, because the mean of its divisors is an integer number (2977695).

Almost surely, 2^90244320 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 90244320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142929360).

90244320 is an abundant number, since it is smaller than the sum of its proper divisors (195614400).

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

90244320 is a wasteful number, since it uses less digits than its factorization.

90244320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068 (or 1060 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 90244320 is about 9499.7010479278. The cubic root of 90244320 is about 448.5456255962.

Adding to 90244320 its reverse (2344209), we get a palindrome (92588529).

The spelling of 90244320 in words is "ninety million, two hundred forty-four thousand, three hundred twenty".