720 in words
720
seven hundred and twenty
720 is written seven hundred and twenty.
Ways to write it
- As an ordinal
- seven hundred and twentieth
- Roman numeral
- DCCXX
- Expanded form
- 700 + 20
Place value
| Place | Digit | Value |
|---|---|---|
| hundreds | 7 | 700 |
| tens | 2 | 20 |
| ones | 0 | 0 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360 and 720 (30 factors)
- First 10 multiples
- 720, 1,440, 2,160, 2,880, 3,600, 4,320, 5,040, 5,760, 6,480, 7,200
- Square
- 720 × 720 = 5,18,400
- Square root
- ≈ 26.83
- Sum of the digits
- 7 + 2 + 0 = 9
- Rounded to the nearest 10
- 720
- Rounded to the nearest 100
- 700
- Number before
- 719
- Number after
- 721
- In binary
1011010000
Quick check
What number comes just after 720?
Show the answer
721
Is 720 even or odd?
Show the answer
Even
What is 720 + 10?
Show the answer
730
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 720 in words?
720 is written "seven hundred and twenty".
Is 720 a prime number?
No. 720 is a composite number, because it has more than two factors.
What are the factors of 720?
The factors of 720 are 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360 and 720.
How do you write 720 in Roman numerals?
720 in Roman numerals is DCCXX.