It is a nude number because it is divisible by every one of its digits.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 321984.
2321984 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 321984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (508508).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
321984 is a wasteful number, since it uses less digits than its factorization.
321984 is an evil number, because the sum of its binary digits is even.
The square root of 321984 is about 567.4363400418. The cubic root of 321984 is about 68.5401047409.
The spelling of 321984 in words is "three hundred twenty-one thousand, nine hundred eighty-four".