90943320 has 128 divisors (see below), whose sum is σ = 297339840. Its totient is φ = 22118400.

The previous prime is 90943297. The next prime is 90943331. The reversal of 90943320 is 2334909.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151020 + ... + 151620.

Almost surely, 2^90943320 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 90943320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148669920).

90943320 is an abundant number, since it is smaller than the sum of its proper divisors (206396520).

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

90943320 is a wasteful number, since it uses less digits than its factorization.

90943320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725 (or 721 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 90943320 is about 9536.4207121960. The cubic root of 90943320 is about 449.7007393002.

The spelling of 90943320 in words is "ninety million, nine hundred forty-three thousand, three hundred twenty".