22422 has 16 divisors (see below), whose sum is σ = 46512. Its totient is φ = 7200.
The previous prime is 22409. The next prime is 22433.
It is a happy number.
22422 is nontrivially palindromic in base 10.
It is a plaindrome in base 15.
It is a junction number, because it is equal to n+sod(n) for n = 22398 and 22407.
It is a congruent number.
It is an unprimeable number.
22422 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172 + ... + 272.
It is an arithmetic number, because the mean of its divisors is an integer number (2907).
222422 is an apocalyptic number.
22422 is an abundant number, since it is smaller than the sum of its proper divisors (24090).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23256).
22422 is a wasteful number, since it uses less digits than its factorization.
22422 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 143.
The product of its digits is 64, while the sum is 12.
The square root of 22422 is about 149.7397742752. The cubic root of 22422 is about 28.1984205141.
It can be divided in two parts, 22 and 422, that added together give a palindrome (444).
The spelling of 22422 in words is "twenty-two thousand, four hundred twenty-two", and thus it is an iban number.
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