90093228 has 12 divisors (see below), whose sum is σ = 210217560. Its totient is φ = 30031072.

The previous prime is 90093203. The next prime is 90093229. The reversal of 90093228 is 82239009.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (90093229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3753873 + ... + 3753896.

It is an arithmetic number, because the mean of its divisors is an integer number (17518130).

Almost surely, 2^90093228 is an apocalyptic number.

It is an amenable number.

90093228 is an abundant number, since it is smaller than the sum of its proper divisors (120124332).

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

90093228 is a wasteful number, since it uses less digits than its factorization.

90093228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7507776 (or 7507774 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 90093228 is about 9491.7452557472. The cubic root of 90093228 is about 448.2951591837.

The spelling of 90093228 in words is "ninety million, ninety-three thousand, two hundred twenty-eight".