21,344 in words
21,344
twenty-one thousand three hundred forty-four
21,344 is written twenty-one thousand three hundred forty-four.
Ways to write it
- As an ordinal
- twenty-one thousand three hundred forty-fourth
- Expanded form
- 20,000 + 1,000 + 300 + 40 + 4
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 3 | 300 |
| tens | 4 | 40 |
| ones | 4 | 4 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 4, 8, 16, 23, 29, 32, 46, 58, 92, 116, 184, 232, 368, 464, 667, 736, 928, 1,334, 2,668, 5,336, 10,672 and 21,344 (24 factors)
- First 10 multiples
- 21,344, 42,688, 64,032, 85,376, 106,720, 128,064, 149,408, 170,752, 192,096, 213,440
- Square
- 21,344 × 21,344 = 455,566,336
- Square root
- ≈ 146.10
- Sum of the digits
- 2 + 1 + 3 + 4 + 4 = 14
- Rounded to the nearest 10
- 21,340
- Rounded to the nearest 100
- 21,300
- Rounded to the nearest 1000
- 21,000
- Number before
- 21,343
- Number after
- 21,345
- In binary
101001101100000
Quick check
What number comes just after 21,344?
Show the answer
21,345
Is 21,344 even or odd?
Show the answer
Even
What is 21,344 + 10?
Show the answer
21,354
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 21,344 in words?
21,344 is written "twenty-one thousand three hundred forty-four".
Is 21,344 a prime number?
No. 21,344 is a composite number, because it has more than two factors.
What are the factors of 21,344?
The factors of 21,344 are 1, 2, 4, 8, 16, 23, 29, 32, 46, 58, 92, 116, 184, 232, 368, 464, 667, 736, 928, 1,334, 2,668, 5,336, 10,672 and 21,344.