• 828 can be written using four 4's:
828 is nontrivially palindromic in base 10 and base 15.
828 is an esthetic number in base 14, because in such base its adjacent digits differ by 1.
It is a tau number, because it is divible by the number of its divisors (18).
828 is an undulating number in base 10 and base 15.
It is a plaindrome in base 16.
It is a nialpdrome in base 14.
It is a zygodrome in base 2.
It is a self number, because there is not a number n which added to its sum of digits gives 828.
It is a congruent number.
2828 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 828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1092).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
828 is a wasteful number, since it uses less digits than its factorization.
828 is an evil number, because the sum of its binary digits is even.
The square root of 828 is about 28.7749891399. The cubic root of 828 is about 9.3902418730.