A number must, surely, be numeric!
I suggest writing it as 24000.
Exactly as in the question: 24000
8 in numeric numbers is VIII.
1995 in "numeric numbers"(?) is 1995. In Roman numerals it would be MCMXCV.
2000
16,000
Exactly as in the question: 24000
You have written 17 in numeric numbers in your question.
They are already expressed as numeric numbers.
8 in numeric numbers is VIII.
1995 in "numeric numbers"(?) is 1995. In Roman numerals it would be MCMXCV.
(VI)
XX
5000
DD
CV
MCDXXXVI
45,000