Adding to 72240 its reverse (4227), we get a palindrome (76467).
It is a tau number, because it is divible by the number of its divisors (80).
It is an unprimeable number.
272240 is an apocalyptic number.
72240 is a gapful number since it is divisible by the number (70) 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 72240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130944).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
72240 is a wasteful number, since it uses less digits than its factorization.
72240 is an evil number, because the sum of its binary digits is even.
The square root of 72240 is about 268.7749988373. The cubic root of 72240 is about 41.6478492808.
The spelling of 72240 in words is "seventy-two thousand, two hundred forty", and thus it is an iban number.