180 in words
180
one hundred and eighty
180 is written one hundred and eighty.
Ways to write it
- As an ordinal
- one hundred and eightieth
- Roman numeral
- CLXXX
- Expanded form
- 100 + 80
Place value
| Place | Digit | Value |
|---|---|---|
| hundreds | 1 | 100 |
| tens | 8 | 80 |
| ones | 0 | 0 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90 and 180 (18 factors)
- First 10 multiples
- 180, 360, 540, 720, 900, 1,080, 1,260, 1,440, 1,620, 1,800
- Square
- 180 × 180 = 32,400
- Square root
- ≈ 13.42
- Sum of the digits
- 1 + 8 + 0 = 9
- Rounded to the nearest 10
- 180
- Rounded to the nearest 100
- 200
- Number before
- 179
- Number after
- 181
- In binary
10110100
Quick check
What number comes just after 180?
Show the answer
181
Is 180 even or odd?
Show the answer
Even
What is 180 + 10?
Show the answer
190
Practise with a game
Factors, Multiples & Primes
Multiples, factors, prime numbers, square numbers and prime factors.
Roman Numerals
Read and write Roman numerals from I to 3,999.Frequently asked questions
How do you write 180 in words?
180 is written "one hundred and eighty".
Is 180 a prime number?
No. 180 is a composite number, because it has more than two factors.
What are the factors of 180?
The factors of 180 are 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90 and 180.
How do you write 180 in Roman numerals?
180 in Roman numerals is CLXXX.