222222228 has 24 divisors (see below), whose sum is σ = 541063488. Its totient is φ = 70853376.

The previous prime is 222222227. The next prime is 222222241. The reversal of 222222228 is 822222222.

It is a plaindrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 222222198 and 222222207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222222227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402301 + ... + 402852.

It is an arithmetic number, because the mean of its divisors is an integer number (22544312).

Almost surely, 2^222222228 is an apocalyptic number.

It is an amenable number.

222222228 is an abundant number, since it is smaller than the sum of its proper divisors (318841260).

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

222222228 is a wasteful number, since it uses less digits than its factorization.

222222228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805183 (or 805181 counting only the distinct ones).

The product of its digits is 2048, while the sum is 24.

The square root of 222222228 is about 14907.1200437912. The cubic root of 222222228 is about 605.7068695268.

The spelling of 222222228 in words is "two hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty-eight".