21,748 in words
21,748
twenty-one thousand seven hundred forty-eight
21,748 is written twenty-one thousand seven hundred forty-eight.
Ways to write it
- As an ordinal
- twenty-one thousand seven hundred forty-eighth
- Expanded form
- 20,000 + 1,000 + 700 + 40 + 8
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 7 | 700 |
| tens | 4 | 40 |
| ones | 8 | 8 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 4, 5,437, 10,874 and 21,748 (6 factors)
- First 10 multiples
- 21,748, 43,496, 65,244, 86,992, 108,740, 130,488, 152,236, 173,984, 195,732, 217,480
- Square
- 21,748 × 21,748 = 472,975,504
- Square root
- ≈ 147.47
- Sum of the digits
- 2 + 1 + 7 + 4 + 8 = 22
- Rounded to the nearest 10
- 21,750
- Rounded to the nearest 100
- 21,700
- Rounded to the nearest 1000
- 22,000
- Number before
- 21,747
- Number after
- 21,749
- In binary
101010011110100
Quick check
What number comes just after 21,748?
Show the answer
21,749
Is 21,748 even or odd?
Show the answer
Even
What is 21,748 + 10?
Show the answer
21,758
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 21,748 in words?
21,748 is written "twenty-one thousand seven hundred forty-eight".
Is 21,748 a prime number?
No. 21,748 is a composite number, because it has more than two factors.
What are the factors of 21,748?
The factors of 21,748 are 1, 2, 4, 5,437, 10,874 and 21,748.