222443320 has 64 divisors (see below), whose sum is σ = 552666240. Its totient is φ = 79900800.

The previous prime is 222443293. The next prime is 222443323. The reversal of 222443320 is 23344222.

It is a super-2 number, since 2×222443320² = 98962061225244800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 222443291 and 222443300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222443323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33475 + ... + 39565.

It is an arithmetic number, because the mean of its divisors is an integer number (8635410).

Almost surely, 2^222443320 is an apocalyptic number.

222443320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222443320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276333120).

222443320 is an abundant number, since it is smaller than the sum of its proper divisors (330222920).

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

222443320 is a wasteful number, since it uses less digits than its factorization.

222443320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6196 (or 6192 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 222443320 is about 14914.5338512472. The cubic root of 222443320 is about 605.9076783553.

Adding to 222443320 its reverse (23344222), we get a palindrome (245787542).

The spelling of 222443320 in words is "two hundred twenty-two million, four hundred forty-three thousand, three hundred twenty".