90375920 has 20 divisors (see below), whose sum is σ = 210124200. Its totient is φ = 36150336.

The previous prime is 90375899. The next prime is 90375937. The reversal of 90375920 is 2957309.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 564770 + ... + 564929.

It is an arithmetic number, because the mean of its divisors is an integer number (10506210).

Almost surely, 2^90375920 is an apocalyptic number.

It is an amenable number.

90375920 is an abundant number, since it is smaller than the sum of its proper divisors (119748280).

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

90375920 is a wasteful number, since it uses less digits than its factorization.

90375920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129712 (or 1129706 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 35.

The square root of 90375920 is about 9506.6250583475. The cubic root of 90375920 is about 448.7635522737.

The spelling of 90375920 in words is "ninety million, three hundred seventy-five thousand, nine hundred twenty".