| Base | Representation |
|---|---|
| bin | 11010100000001… |
| … | …10001000010100 |
| 3 | 120111100012010100 |
| 4 | 31100012020110 |
| 5 | 423403320340 |
| 6 | 34021054100 |
| 7 | 5336500440 |
| oct | 1520061024 |
| 9 | 514305110 |
| 10 | 222323220 |
| 11 | 10454a7a9 |
| 12 | 62557330 |
| 13 | 370a2002 |
| 14 | 21753820 |
| 15 | 147b8830 |
| hex | d406214 |
222323220 has 144 divisors (see below), whose sum is σ = 778796928. Its totient is φ = 50284800.
The previous prime is 222323177. The next prime is 222323239. The reversal of 222323220 is 22323222.
It is a super-2 number, since 2×2223232202 = 98855228302336800, which contains 22 as substring.
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 = 222323193 and 222323202.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 126387 + ... + 128133.
It is an arithmetic number, because the mean of its divisors is an integer number (5408312).
Almost surely, 2222323220 is an apocalyptic number.
222323220 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 222323220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (389398464).
222323220 is an abundant number, since it is smaller than the sum of its proper divisors (556473708).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
222323220 is a wasteful number, since it uses less digits than its factorization.
222323220 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1870 (or 1865 counting only the distinct ones).
The product of its (nonzero) digits is 576, while the sum is 18.
The square root of 222323220 is about 14910.5070336324. The cubic root of 222323220 is about 605.7986129501.
Adding to 222323220 its reverse (22323222), we get a palindrome (244646442).
It can be divided in two parts, 22232 and 3220, that added together give a palindrome (25452).
The spelling of 222323220 in words is "two hundred twenty-two million, three hundred twenty-three thousand, two hundred twenty".
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