• 748 can be written using four 4's:
It is a happy number.
It is a plaindrome in base 13 and base 15.
It is a nialpdrome in base 11.
748 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
2748 is an apocalyptic number.
It is an amenable number.
748 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
748 is a wasteful number, since it uses less digits than its factorization.
748 is an evil number, because the sum of its binary digits is even.
The square root of 748 is about 27.3495886624. The cubic root of 748 is about 9.0775196832.
Adding to 748 its sum of digits (19), we get a palindrome (767).
Subtracting from 748 its sum of digits (19), we obtain a 6-th power (729 = 36).
Subtracting 748 from its reverse (847), we obtain a palindrome (99).
The spelling of 748 in words is "seven hundred forty-eight", and thus it is an aban number.