• 888 can be written using four 4's:
It is a happy number.
888 is nontrivially palindromic in base 10 and base 15.
It is a nude number because it is divisible by every one of its digits.
888 is a strobogrammatic number because it is the same when read upside-down.
888 is an undulating number in base 6 and base 15.
888 is a nontrivial repdigit in base 10.
It is a plaindrome in base 10 and base 16.
It is a nialpdrome in base 10 and base 12.
It is a zygodrome in base 10.
It is a congruent number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1140).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
888 is a wasteful number, since it uses less digits than its factorization.
888 is an evil number, because the sum of its binary digits is even.
The square root of 888 is about 29.7993288515. The cubic root of 888 is about 9.6117910674.
Multiplying 888 by its sum of digits (24), we get a palindrome (21312).