222445272 has 128 divisors (see below), whose sum is σ = 683043840. Its totient is φ = 58920960.

The previous prime is 222445261. The next prime is 222445291. The reversal of 222445272 is 272544222.

222445272 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 202228 + ... + 203324.

It is an arithmetic number, because the mean of its divisors is an integer number (5336280).

Almost surely, 2^222445272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222445272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (341521920).

222445272 is an abundant number, since it is smaller than the sum of its proper divisors (460598568).

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

222445272 is a wasteful number, since it uses less digits than its factorization.

222445272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201 (or 1197 counting only the distinct ones).

The product of its digits is 17920, while the sum is 30.

The square root of 222445272 is about 14914.5992906280. The cubic root of 222445272 is about 605.9094506844.

Adding to 222445272 its reverse (272544222), we get a palindrome (494989494).

The spelling of 222445272 in words is "two hundred twenty-two million, four hundred forty-five thousand, two hundred seventy-two".