21,320 in words
21,320
twenty-one thousand three hundred twenty
21,320 is written twenty-one thousand three hundred twenty.
Ways to write it
- As an ordinal
- twenty-one thousand three hundred twentieth
- Expanded form
- 20,000 + 1,000 + 300 + 20
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 3 | 300 |
| tens | 2 | 20 |
| ones | 0 | 0 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 41, 52, 65, 82, 104, 130, 164, 205, 260, 328, 410, 520, 533, 820, 1,066, 1,640, 2,132, 2,665, 4,264, 5,330, 10,660 and 21,320 (32 factors)
- First 10 multiples
- 21,320, 42,640, 63,960, 85,280, 106,600, 127,920, 149,240, 170,560, 191,880, 213,200
- Square
- 21,320 × 21,320 = 454,542,400
- Square root
- ≈ 146.01
- Sum of the digits
- 2 + 1 + 3 + 2 + 0 = 8
- Rounded to the nearest 10
- 21,320
- Rounded to the nearest 100
- 21,300
- Rounded to the nearest 1000
- 21,000
- Number before
- 21,319
- Number after
- 21,321
- In binary
101001101001000
Quick check
What number comes just after 21,320?
Show the answer
21,321
Is 21,320 even or odd?
Show the answer
Even
What is 21,320 + 10?
Show the answer
21,330
Practise 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 21,320 in words?
21,320 is written "twenty-one thousand three hundred twenty".
Is 21,320 a prime number?
No. 21,320 is a composite number, because it has more than two factors.
What are the factors of 21,320?
The factors of 21,320 are 1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 41, 52, 65, 82, 104, 130, 164, 205, 260, 328, 410, 520, 533, 820, 1,066, 1,640, 2,132, 2,665, 4,264, 5,330, 10,660 and 21,320.