17 in words
British English
seventeen
Seventeen is the longest of the -teen numbers, at nine letters.
Quick reference
- In figures
- 17
- British English
- seventeen
- American English
- The same (why they differ)
- Ordinal
- seventeenth (17th)
- Roman numeral
- XVII
- Place value
- 1 in the tens column; 7 in the ones column
- Expanded form
- 10 + 7
- Standard form
- 1.7 × 10¹
- Even or odd
- Odd
- Prime factors
- None but itself and one: it is prime
Convert any other number, up to thirty-six digits.