Adding to 3216 its reverse (6123), we get a palindrome (9339).
It is a nude number because it is divisible by every one of its digits.
It is an alternating number because its digits alternate between odd and even.
It is a plaindrome in base 14.
It is a nialpdrome in base 8 and base 16.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 3216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4216).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
3216 is a wasteful number, since it uses less digits than its factorization.
3216 is an evil number, because the sum of its binary digits is even.
The square root of 3216 is about 56.7097875150. The cubic root of 3216 is about 14.7606453842.
The spelling of 3216 in words is "three thousand, two hundred sixteen".