90298920 has 64 divisors (see below), whose sum is σ = 282683520. Its totient is φ = 23032064.

The previous prime is 90298919. The next prime is 90298921. The reversal of 90298920 is 2989209.

It is an interprime number because it is at equal distance from previous prime (90298919) and next prime (90298921).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (90298921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13599 + ... + 19118.

It is an arithmetic number, because the mean of its divisors is an integer number (4416930).

Almost surely, 2^90298920 is an apocalyptic number.

It is an amenable number.

90298920 is an abundant number, since it is smaller than the sum of its proper divisors (192384600).

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

90298920 is a wasteful number, since it uses less digits than its factorization.

90298920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32754 (or 32750 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 90298920 is about 9502.5743880277. The cubic root of 90298920 is about 448.6360676823.

The spelling of 90298920 in words is "ninety million, two hundred ninety-eight thousand, nine hundred twenty".