90020898 has 48 divisors (see below), whose sum is σ = 223984800. Its totient is φ = 25842240.

The previous prime is 90020897. The next prime is 90020911. The reversal of 90020898 is 89802009.

It is not an unprimeable number, because it can be changed into a prime (90020897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8203 + ... + 15726.

It is an arithmetic number, because the mean of its divisors is an integer number (4666350).

Almost surely, 2^90020898 is an apocalyptic number.

90020898 is an abundant number, since it is smaller than the sum of its proper divisors (133963902).

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

90020898 is a wasteful number, since it uses less digits than its factorization.

90020898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23967 (or 23964 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 90020898 is about 9487.9343378841. The cubic root of 90020898 is about 448.1751580441.

The spelling of 90020898 in words is "ninety million, twenty thousand, eight hundred ninety-eight".