222742228 has 36 divisors (see below), whose sum is σ = 420288372. Its totient is φ = 102933760.

The previous prime is 222742213. The next prime is 222742231. The reversal of 222742228 is 822247222.

222742228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 156450064 + 66292164 = 12508^2 + 8142^2 .

It is a super-2 number, since 2×222742228² = 99228200268807968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 222742228.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 236238 + ... + 237178.

It is an arithmetic number, because the mean of its divisors is an integer number (11674677).

Almost surely, 2^222742228 is an apocalyptic number.

It is an amenable number.

222742228 is a deficient number, since it is larger than the sum of its proper divisors (197546144).

222742228 is a wasteful number, since it uses less digits than its factorization.

222742228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080 (or 1019 counting only the distinct ones).

The product of its digits is 14336, while the sum is 31.

The square root of 222742228 is about 14924.5511825314. The cubic root of 222742228 is about 606.1789528391.

The spelling of 222742228 in words is "two hundred twenty-two million, seven hundred forty-two thousand, two hundred twenty-eight".