Adding to 22320 its reverse (2322), we get a palindrome (24642).
22320 is nontrivially palindromic in base 11.
It is a tau number, because it is divible by the number of its divisors (60).
It is an Ulam number.
It is an unprimeable number.
222320 is an apocalyptic number.
22320 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 22320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38688).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
22320 is a wasteful number, since it uses less digits than its factorization.
22320 is an odious number, because the sum of its binary digits is odd.
The square root of 22320 is about 149.3987951759. The cubic root of 22320 is about 28.1555963327.
The spelling of 22320 in words is "twenty-two thousand, three hundred twenty", and thus it is an iban number.