9280228 has 12 divisors (see below), whose sum is σ = 16516080. Its totient is φ = 4561352.

The previous prime is 9280211. The next prime is 9280241. The reversal of 9280228 is 8220829.

9280228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×9280228² = 172245263463968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9280228.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19426 + ... + 19897.

It is an arithmetic number, because the mean of its divisors is an integer number (1376340).

Almost surely, 2^9280228 is an apocalyptic number.

It is an amenable number.

9280228 is a deficient number, since it is larger than the sum of its proper divisors (7235852).

9280228 is a wasteful number, since it uses less digits than its factorization.

9280228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39386 (or 39384 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 9280228 is about 3046.3466644491. The cubic root of 9280228 is about 210.1452358885.

The spelling of 9280228 in words is "nine million, two hundred eighty thousand, two hundred twenty-eight".