222256890 has 48 divisors (see below), whose sum is σ = 590174208. Its totient is φ = 58006368.

The previous prime is 222256873. The next prime is 222256897. The reversal of 222256890 is 98652222.

222256890 is a `hidden beast` number, since 2 + 2 + 2 + 2 + 568 + 90 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (222256897) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22042 + ... + 30501.

It is an arithmetic number, because the mean of its divisors is an integer number (12295296).

Almost surely, 2^222256890 is an apocalyptic number.

222256890 is an abundant number, since it is smaller than the sum of its proper divisors (367917318).

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

222256890 is a wasteful number, since it uses less digits than its factorization.

222256890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52603 (or 52600 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 222256890 is about 14908.2825972679. The cubic root of 222256890 is about 605.7383604060.

The spelling of 222256890 in words is "two hundred twenty-two million, two hundred fifty-six thousand, eight hundred ninety".