8420228 has 12 divisors (see below), whose sum is σ = 14765520. Its totient is φ = 4201512.

The previous prime is 8420221. The next prime is 8420233. The reversal of 8420228 is 8220248.

It is a junction number, because it is equal to n+sod(n) for n = 8420197 and 8420206.

It is not an unprimeable number, because it can be changed into a prime (8420221) 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, 383 + ... + 4121.

It is an arithmetic number, because the mean of its divisors is an integer number (1230460).

Almost surely, 2^8420228 is an apocalyptic number.

It is an amenable number.

8420228 is a deficient number, since it is larger than the sum of its proper divisors (6345292).

8420228 is a wasteful number, since it uses less digits than its factorization.

8420228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4306 (or 4304 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 8420228 is about 2901.7629124379. The cubic root of 8420228 is about 203.4423125085.

The spelling of 8420228 in words is "eight million, four hundred twenty thousand, two hundred twenty-eight".