Adding to 220000 its reverse (22), we get a palindrome (220022).
Multipling 220000 by its reverse (22), we get a square (4840000 = 22002).
220000 divided by its reverse (22) gives a 4-th power (10000 = 104).
220000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.
It is a nialpdrome in base 8 and base 10.
It is a zygodrome in base 10.
It is a congruent number.
2220000 is an apocalyptic number.
220000 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 220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295218).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
220000 is an equidigital number, since it uses as much as digits as its factorization.
220000 is an odious number, because the sum of its binary digits is odd.
The square root of 220000 is about 469.0415759823. The cubic root of 220000 is about 60.3681073680.
The spelling of 220000 in words is "two hundred twenty thousand", and thus it is an iban number.