90272208 has 40 divisors (see below), whose sum is σ = 251143648. Its totient is φ = 27775872.

The previous prime is 90272167. The next prime is 90272209. The reversal of 90272208 is 80227209.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90272209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71710 + ... + 72957.

Almost surely, 2^90272208 is an apocalyptic number.

It is an amenable number.

90272208 is an abundant number, since it is smaller than the sum of its proper divisors (160871440).

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

90272208 is a wasteful number, since it uses less digits than its factorization.

90272208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144691 (or 144685 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 90272208 is about 9501.1687702093. The cubic root of 90272208 is about 448.5918251874.

The spelling of 90272208 in words is "ninety million, two hundred seventy-two thousand, two hundred eight".