2223228 has 72 divisors (see below), whose sum is σ = 6384000. Its totient is φ = 598752.

The previous prime is 2223217. The next prime is 2223233. The reversal of 2223228 is 8223222.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11073 + ... + 11271.

2^2223228 is an apocalyptic number.

2223228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2223228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3192000).

2223228 is an abundant number, since it is smaller than the sum of its proper divisors (4160772).

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

2223228 is a wasteful number, since it uses less digits than its factorization.

2223228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 230 counting only the distinct ones).

The product of its digits is 768, while the sum is 21.

The square root of 2223228 is about 1491.0492949598. The cubic root of 2223228 is about 130.5152725039.

The spelling of 2223228 in words is "two million, two hundred twenty-three thousand, two hundred twenty-eight".