| Base | Representation |
|---|---|
| bin | 101010011111… |
| … | …0010010010100 |
| 3 | 1112220200212011 |
| 4 | 1110332102110 |
| 5 | 21200301340 |
| 6 | 2113234004 |
| 7 | 360223222 |
| oct | 124762224 |
| 9 | 45820764 |
| 10 | 22275220 |
| 11 | 11634780 |
| 12 | 7562904 |
| 13 | 47cbc06 |
| 14 | 2d5bb12 |
| 15 | 1e500ea |
| hex | 153e494 |
22275220 has 72 divisors (see below), whose sum is σ = 54462240. Its totient is φ = 7568640.
The previous prime is 22275217. The next prime is 22275223. The reversal of 22275220 is 2257222.
It is a happy number.
It is an interprime number because it is at equal distance from previous prime (22275217) and next prime (22275223).
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 = 22275191 and 22275200.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (22275223) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 305104 + ... + 305176.
It is an arithmetic number, because the mean of its divisors is an integer number (756420).
Almost surely, 222275220 is an apocalyptic number.
22275220 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 22275220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27231120).
22275220 is an abundant number, since it is smaller than the sum of its proper divisors (32187020).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
22275220 is a wasteful number, since it uses less digits than its factorization.
22275220 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 185 (or 110 counting only the distinct ones).
The product of its (nonzero) digits is 1120, while the sum is 22.
The square root of 22275220 is about 4719.6631235714. The cubic root of 22275220 is about 281.3675446118.
It can be divided in two parts, 2227 and 5220, that added together give a palindrome (7447).
The spelling of 22275220 in words is "twenty-two million, two hundred seventy-five thousand, two hundred twenty".
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