222340320 has 144 divisors (see below), whose sum is σ = 771891120. Its totient is φ = 58263552.

The previous prime is 222340319. The next prime is 222340343. The reversal of 222340320 is 23043222.

222340320 is a `hidden beast` number, since 2 + 2 + 2 + 340 + 320 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 222340293 and 222340302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83652 + ... + 86268.

It is an arithmetic number, because the mean of its divisors is an integer number (5360355).

Almost surely, 2^222340320 is an apocalyptic number.

222340320 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 222340320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (385945560).

222340320 is an abundant number, since it is smaller than the sum of its proper divisors (549550800).

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

222340320 is a wasteful number, since it uses less digits than its factorization.

222340320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2697 (or 2686 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 222340320 is about 14911.0804437505. The cubic root of 222340320 is about 605.8141442273.

Adding to 222340320 its reverse (23043222), we get a palindrome (245383542).

The spelling of 222340320 in words is "two hundred twenty-two million, three hundred forty thousand, three hundred twenty".