Adding to 7400 its reverse (47), we get a palindrome (7447).
It is a nialpdrome in base 10.
It is an unprimeable number.
7400 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
7400 is the 50-th octagonal number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 7400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8835).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
7400 is a wasteful number, since it uses less digits than its factorization.
7400 is an odious number, because the sum of its binary digits is odd.
The square root of 7400 is about 86.0232526704. The cubic root of 7400 is about 19.4869516037.
The spelling of 7400 in words is "seven thousand, four hundred", and thus it is an iban number.