222320320 has 112 divisors (see below), whose sum is σ = 550395648. Its totient is φ = 85478400.

The previous prime is 222320317. The next prime is 222320347. The reversal of 222320320 is 23023222.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 222320294 and 222320303.

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, 1472245 + ... + 1472395.

Almost surely, 2^222320320 is an apocalyptic number.

222320320 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 222320320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275197824).

222320320 is an abundant number, since it is smaller than the sum of its proper divisors (328075328).

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

222320320 is a wasteful number, since it uses less digits than its factorization.

222320320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 222320320 is about 14910.4097864546. The cubic root of 222320320 is about 605.7959789118.

Adding to 222320320 its reverse (23023222), we get a palindrome (245343542).

The spelling of 222320320 in words is "two hundred twenty-two million, three hundred twenty thousand, three hundred twenty".