It is a nude number because it is divisible by every one of its digits.
It is a plaindrome in base 14.
It is a nialpdrome in base 12.
It is a congruent number.
216144 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
2216144 is an apocalyptic number.
216144 is a gapful number since it is divisible by the number (24) 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 216144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322400).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
216144 is a wasteful number, since it uses less digits than its factorization.
216144 is an odious number, because the sum of its binary digits is odd.
The square root of 216144 is about 464.9128950675. The cubic root of 216144 is about 60.0133303715.
Adding to 216144 its reverse (441612), we get a palindrome (657756).
The spelling of 216144 in words is "two hundred sixteen thousand, one hundred forty-four".