4390228 has 6 divisors (see below), whose sum is σ = 7682906. Its totient is φ = 2195112.

The previous prime is 4390219. The next prime is 4390229. The reversal of 4390228 is 8220934.

It can be written as a sum of positive squares in only one way, i.e., 4251844 + 138384 = 2062^2 + 372^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4390196 and 4390205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4390229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 548775 + ... + 548782.

Almost surely, 2^4390228 is an apocalyptic number.

It is an amenable number.

4390228 is a deficient number, since it is larger than the sum of its proper divisors (3292678).

4390228 is a wasteful number, since it uses less digits than its factorization.

4390228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097561 (or 1097559 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 4390228 is about 2095.2870925007. The cubic root of 4390228 is about 163.7428549997.

The spelling of 4390228 in words is "four million, three hundred ninety thousand, two hundred twenty-eight".