90930520 has 32 divisors (see below), whose sum is σ = 204897600. Its totient is φ = 36318208.

The previous prime is 90930517. The next prime is 90930547. The reversal of 90930520 is 2503909.

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, 35937 + ... + 38383.

It is an arithmetic number, because the mean of its divisors is an integer number (6403050).

Almost surely, 2^90930520 is an apocalyptic number.

It is an amenable number.

90930520 is an abundant number, since it is smaller than the sum of its proper divisors (113967080).

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

90930520 is a wasteful number, since it uses less digits than its factorization.

90930520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3387 (or 3383 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 90930520 is about 9535.7495772488. The cubic root of 90930520 is about 449.6796402995.

The spelling of 90930520 in words is "ninety million, nine hundred thirty thousand, five hundred twenty".