9390228 has 12 divisors (see below), whose sum is σ = 21910560. Its totient is φ = 3130072.

The previous prime is 9390221. The next prime is 9390257. The reversal of 9390228 is 8220939.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9390221) 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, 391248 + ... + 391271.

It is an arithmetic number, because the mean of its divisors is an integer number (1825880).

Almost surely, 2^9390228 is an apocalyptic number.

It is an amenable number.

9390228 is an abundant number, since it is smaller than the sum of its proper divisors (12520332).

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

9390228 is a wasteful number, since it uses less digits than its factorization.

9390228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782526 (or 782524 counting only the distinct ones).

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

The square root of 9390228 is about 3064.3478914771. The cubic root of 9390228 is about 210.9722716121.

The spelling of 9390228 in words is "nine million, three hundred ninety thousand, two hundred twenty-eight".