90910320 has 40 divisors (see below), whose sum is σ = 281822736. Its totient is φ = 24242688.

The previous prime is 90910301. The next prime is 90910333. The reversal of 90910320 is 2301909.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

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 7 ways as a sum of consecutive naturals, for example, 189157 + ... + 189636.

Almost surely, 2^90910320 is an apocalyptic number.

It is an amenable number.

90910320 is an abundant number, since it is smaller than the sum of its proper divisors (190912416).

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

90910320 is a wasteful number, since it uses less digits than its factorization.

90910320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378809 (or 378803 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 90910320 is about 9534.6903463091. The cubic root of 90910320 is about 449.6463394105.

The spelling of 90910320 in words is "ninety million, nine hundred ten thousand, three hundred twenty".