Adding to 3240 its reverse (423), we get a palindrome (3663).
It is a tau number, because it is divible by the number of its divisors (40).
It is a nialpdrome in base 3, base 9, base 15 and base 16.
It is a zygodrome in base 3 and base 9.
It is an unprimeable number.
3240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.
3240 is the 80-th triangular number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 3240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5445).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
3240 is a wasteful number, since it uses less digits than its factorization.
3240 is an odious number, because the sum of its binary digits is odd.
The square root of 3240 is about 56.9209978830. The cubic root of 3240 is about 14.7972724460.
The spelling of 3240 in words is "three thousand, two hundred forty", and thus it is an iban number.