90205092 has 36 divisors (see below), whose sum is σ = 231762076. Its totient is φ = 29574720.

The previous prime is 90205069. The next prime is 90205121. The reversal of 90205092 is 29050209.

It can be written as a sum of positive squares in 2 ways, for example, as 41679936 + 48525156 = 6456^2 + 6966^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18343 + ... + 22734.

Almost surely, 2^90205092 is an apocalyptic number.

It is an amenable number.

90205092 is an abundant number, since it is smaller than the sum of its proper divisors (141556984).

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

90205092 is a wasteful number, since it uses less digits than its factorization.

90205092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41148 (or 41143 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 90205092 is about 9497.6361269529. The cubic root of 90205092 is about 448.4806239136.

The spelling of 90205092 in words is "ninety million, two hundred five thousand, ninety-two".