It is a nude number because it is divisible by every one of its digits.
It is an unprimeable number.
72744 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
272744 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 72744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104160).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
72744 is a wasteful number, since it uses less digits than its factorization.
72744 is an evil number, because the sum of its binary digits is even.
The square root of 72744 is about 269.7109563959. The cubic root of 72744 is about 41.7444803680.
The spelling of 72744 in words is "seventy-two thousand, seven hundred forty-four", and thus it is an iban number.