21,340 in words
21,340
twenty-one thousand three hundred forty
21,340 is written twenty-one thousand three hundred forty.
Ways to write it
- As an ordinal
- twenty-one thousand three hundred fortieth
- Expanded form
- 20,000 + 1,000 + 300 + 40
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 3 | 300 |
| tens | 4 | 40 |
| ones | 0 | 0 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 97, 110, 194, 220, 388, 485, 970, 1,067, 1,940, 2,134, 4,268, 5,335, 10,670 and 21,340 (24 factors)
- First 10 multiples
- 21,340, 42,680, 64,020, 85,360, 106,700, 128,040, 149,380, 170,720, 192,060, 213,400
- Square
- 21,340 × 21,340 = 455,395,600
- Square root
- ≈ 146.08
- Sum of the digits
- 2 + 1 + 3 + 4 + 0 = 10
- Rounded to the nearest 10
- 21,340
- Rounded to the nearest 100
- 21,300
- Rounded to the nearest 1000
- 21,000
- Number before
- 21,339
- Number after
- 21,341
- In binary
101001101011100
Quick check
What number comes just after 21,340?
Show the answer
21,341
Is 21,340 even or odd?
Show the answer
Even
What is 21,340 + 10?
Show the answer
21,350
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 21,340 in words?
21,340 is written "twenty-one thousand three hundred forty".
Is 21,340 a prime number?
No. 21,340 is a composite number, because it has more than two factors.
What are the factors of 21,340?
The factors of 21,340 are 1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 97, 110, 194, 220, 388, 485, 970, 1,067, 1,940, 2,134, 4,268, 5,335, 10,670 and 21,340.