222255992 has 64 divisors (see below), whose sum is σ = 508654080. Its totient is φ = 88970112.

The previous prime is 222255973. The next prime is 222256063. The reversal of 222255992 is 299552222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53378 + ... + 57390.

It is an arithmetic number, because the mean of its divisors is an integer number (7947720).

Almost surely, 2^222255992 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 222255992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254327040).

222255992 is an abundant number, since it is smaller than the sum of its proper divisors (286398088).

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

222255992 is a wasteful number, since it uses less digits than its factorization.

222255992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4092 (or 4088 counting only the distinct ones).

The product of its digits is 64800, while the sum is 38.

The square root of 222255992 is about 14908.2524797509. The cubic root of 222255992 is about 605.7375446026.

The spelling of 222255992 in words is "two hundred twenty-two million, two hundred fifty-five thousand, nine hundred ninety-two".