8538228 has 18 divisors (see below), whose sum is σ = 21582834. Its totient is φ = 2846064.

The previous prime is 8538227. The next prime is 8538259. The reversal of 8538228 is 8228358.

It can be written as a sum of positive squares in only one way, i.e., 8538084 + 144 = 2922^2 + 12^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 237173 = 8538228 / (8 + 5 + 3 + 8 + 2 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 8538192 and 8538201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8538223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118551 + ... + 118622.

Almost surely, 2^8538228 is an apocalyptic number.

It is an amenable number.

8538228 is an abundant number, since it is smaller than the sum of its proper divisors (13044606).

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

8538228 is a wasteful number, since it uses less digits than its factorization.

8538228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237183 (or 237178 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 8538228 is about 2922.0246405532. The cubic root of 8538228 is about 204.3882456415.

The spelling of 8538228 in words is "eight million, five hundred thirty-eight thousand, two hundred twenty-eight".