The cubic root of 8000 is 20.
8000 is an esthetic number in base 6, because in such base its adjacent digits differ by 1.
It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.
It is a nialpdrome in base 10.
It is a congruent number.
8000 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
28000 is an apocalyptic number.
8000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 8000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9906).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
8000 is an equidigital number, since it uses as much as digits as its factorization.
8000 is an evil number, because the sum of its binary digits is even.
The square root of 8000 is about 89.4427191000.
The spelling of 8000 in words is "eight thousand".