It is a happy number.
27216 is nontrivially palindromic in base 5.
It is an alternating number because its digits alternate between even and odd.
It is a nialpdrome in base 6.
It is a zygodrome in base 6.
It is a congruent number.
27216 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
227216 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 27216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45136).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
27216 is an equidigital number, since it uses as much as digits as its factorization.
27216 is an evil number, because the sum of its binary digits is even.
The square root of 27216 is about 164.9727250184. The cubic root of 27216 is about 30.0797876098.
Adding to 27216 its reverse (61272), we get a palindrome (88488).
The spelling of 27216 in words is "twenty-seven thousand, two hundred sixteen".