XXVIII
20 + 5 + 3 = 28
XXVIII breaks down as XX + V + III (XX = 20, V = 5, III = 3), which add up to 28.
XXVIII breaks down as XX + V + III (XX = 20, V = 5, III = 3), which add up to 28.
The number 28 is written XXVIII in Roman numerals. Roman numerals use seven letters — I (1), V (5), X (10), L (50), C (100), D (500) and M (1000) — combined from largest to smallest, with subtractive pairs such as IV (4) and IX (9). Need another number? Use the Roman numeral converter or see the 1–100 chart.