90902088 has 40 divisors (see below), whose sum is σ = 254611830. Its totient is φ = 30300480.

The previous prime is 90902087. The next prime is 90902113. The reversal of 90902088 is 88020909.

It can be written as a sum of positive squares in only one way, i.e., 65318724 + 25583364 = 8082^2 + 5058^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (90902083) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 69493 + ... + 70788.

Almost surely, 2^90902088 is an apocalyptic number.

It is an amenable number.

90902088 is an abundant number, since it is smaller than the sum of its proper divisors (163709742).

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

90902088 is a wasteful number, since it uses less digits than its factorization.

90902088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140299 (or 140286 counting only the distinct ones).

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

The square root of 90902088 is about 9534.2586497326. The cubic root of 90902088 is about 449.6327670592.

The spelling of 90902088 in words is "ninety million, nine hundred two thousand, eighty-eight".