• 896 can be written using four 4's:
It is a tau number, because it is divible by the number of its divisors (16).
It is an ABA number since it can be written as A⋅BA, here for A=7, B=2.
It is an alternating number because its digits alternate between even and odd.
It is a nialpdrome in base 2 and base 4.
It is a zygodrome in base 2.
It is a congruent number.
It is an unprimeable number.
896 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1020).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
896 is an equidigital number, since it uses as much as digits as its factorization.
896 is an odious number, because the sum of its binary digits is odd.
The square root of 896 is about 29.9332590942. The cubic root of 896 is about 9.6405690567.
Adding to 896 its sum of digits (23), we get a palindrome (919).
Subtracting from 896 its product of digits (432), we obtain a palindrome (464).