222224646 has 64 divisors (see below), whose sum is σ = 566161920. Its totient is φ = 56609280.

The previous prime is 222224599. The next prime is 222224669. The reversal of 222224646 is 646422222.

222224646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

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, 5376 + ... + 21756.

It is an arithmetic number, because the mean of its divisors is an integer number (8846280).

Almost surely, 2^222224646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222224646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283080960).

222224646 is an abundant number, since it is smaller than the sum of its proper divisors (343937274).

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

222224646 is a wasteful number, since it uses less digits than its factorization.

222224646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16429.

The product of its digits is 18432, while the sum is 30.

The square root of 222224646 is about 14907.2011457550. The cubic root of 222224646 is about 605.7090664176.

Adding to 222224646 its reverse (646422222), we get a palindrome (868646868).

The spelling of 222224646 in words is "two hundred twenty-two million, two hundred twenty-four thousand, six hundred forty-six".