It is an Ulam number.
It is a plaindrome in base 9 and base 15.
It is a zygodrome in base 15.
It is a congruent number.
It is an unprimeable number.
7424 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
27424 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 7424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7665).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
7424 is an equidigital number, since it uses as much as digits as its factorization.
7424 is an evil number, because the sum of its binary digits is even.
The square root of 7424 is about 86.1626369142. The cubic root of 7424 is about 19.5079958443.
The spelling of 7424 in words is "seven thousand, four hundred twenty-four", and thus it is an iban number.