4220226 has 12 divisors (see below), whose sum is σ = 9143862. Its totient is φ = 1406736.

The previous prime is 4220207. The next prime is 4220239. The reversal of 4220226 is 6220224.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4004001 + 216225 = 2001^2 + 465^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 234457 = 4220226 / (4 + 2 + 2 + 0 + 2 + 2 + 6).

It is a junction number, because it is equal to n+sod(n) for n = 4220199 and 4220208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117211 + ... + 117246.

Almost surely, 2^4220226 is an apocalyptic number.

4220226 is an abundant number, since it is smaller than the sum of its proper divisors (4923636).

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

4220226 is a wasteful number, since it uses less digits than its factorization.

4220226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234465 (or 234462 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 4220226 is about 2054.3188652203. The cubic root of 4220226 is about 161.6014436773.

The spelling of 4220226 in words is "four million, two hundred twenty thousand, two hundred twenty-six".