21,700 in words
21,700
twenty-one thousand seven hundred
21,700 is written twenty-one thousand seven hundred.
Ways to write it
- As an ordinal
- twenty-one thousand seven hundredth
- Expanded form
- 20,000 + 1,000 + 700
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 7 | 700 |
| tens | 0 | 0 |
| ones | 0 | 0 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 31, 35, 50, 62, 70, 100, 124, 140, 155, 175, 217, 310, 350, 434, 620, 700, 775, 868, 1,085, 1,550, 2,170, 3,100, 4,340, 5,425, 10,850 and 21,700 (36 factors)
- First 10 multiples
- 21,700, 43,400, 65,100, 86,800, 108,500, 130,200, 151,900, 173,600, 195,300, 217,000
- Square
- 21,700 × 21,700 = 470,890,000
- Square root
- ≈ 147.31
- Sum of the digits
- 2 + 1 + 7 + 0 + 0 = 10
- Rounded to the nearest 10
- 21,700
- Rounded to the nearest 100
- 21,700
- Rounded to the nearest 1000
- 22,000
- Number before
- 21,699
- Number after
- 21,701
- In binary
101010011000100
Quick check
What number comes just after 21,700?
Show the answer
21,701
Is 21,700 even or odd?
Show the answer
Even
What is 21,700 + 10?
Show the answer
21,710
Practice with a game
Factors, Multiples & Primes
Multiples, factors, prime numbers, square numbers and prime factors.
Number Patterns
Find the missing number in a sequence.Frequently asked questions
How do you write 21,700 in words?
21,700 is written "twenty-one thousand seven hundred".
Is 21,700 a prime number?
No. 21,700 is a composite number, because it has more than two factors.
What are the factors of 21,700?
The factors of 21,700 are 1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 31, 35, 50, 62, 70, 100, 124, 140, 155, 175, 217, 310, 350, 434, 620, 700, 775, 868, 1,085, 1,550, 2,170, 3,100, 4,340, 5,425, 10,850 and 21,700.