90369228 has 12 divisors (see below), whose sum is σ = 210861560. Its totient is φ = 30123072.

The previous prime is 90369221. The next prime is 90369239. The reversal of 90369228 is 82296309.

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 (90369221) 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, 3765373 + ... + 3765396.

Almost surely, 2^90369228 is an apocalyptic number.

It is an amenable number.

90369228 is an abundant number, since it is smaller than the sum of its proper divisors (120492332).

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

90369228 is a wasteful number, since it uses less digits than its factorization.

90369228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7530776 (or 7530774 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 90369228 is about 9506.2730867570. The cubic root of 90369228 is about 448.7524755775.

The spelling of 90369228 in words is "ninety million, three hundred sixty-nine thousand, two hundred twenty-eight".