90288066 has 32 divisors (see below), whose sum is σ = 202321728. Its totient is φ = 26619840.

The previous prime is 90288053. The next prime is 90288083. The reversal of 90288066 is 66088209.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16045 + ... + 20928.

It is an arithmetic number, because the mean of its divisors is an integer number (6322554).

Almost surely, 2^90288066 is an apocalyptic number.

90288066 is an abundant number, since it is smaller than the sum of its proper divisors (112033662).

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

90288066 is a wasteful number, since it uses less digits than its factorization.

90288066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37026.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 90288066 is about 9502.0032624705. The cubic root of 90288066 is about 448.6180914946.

The spelling of 90288066 in words is "ninety million, two hundred eighty-eight thousand, sixty-six".