21,673 in words
21,673
twenty-one thousand six hundred seventy-three
21,673 is written twenty-one thousand six hundred seventy-three.
Ways to write it
- As an ordinal
- twenty-one thousand six hundred seventy-third
- Expanded form
- 20,000 + 1,000 + 600 + 70 + 3
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 6 | 600 |
| tens | 7 | 70 |
| ones | 3 | 3 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Prime
- Factors
- 1 and 21,673 (2 factors)
- First 10 multiples
- 21,673, 43,346, 65,019, 86,692, 108,365, 130,038, 151,711, 173,384, 195,057, 216,730
- Square
- 21,673 × 21,673 = 469,718,929
- Square root
- ≈ 147.22
- Sum of the digits
- 2 + 1 + 6 + 7 + 3 = 19
- Rounded to the nearest 10
- 21,670
- Rounded to the nearest 100
- 21,700
- Rounded to the nearest 1000
- 22,000
- Number before
- 21,672
- Number after
- 21,674
- In binary
101010010101001
Quick check
What number comes just after 21,673?
Show the answer
21,674
Is 21,673 even or odd?
Show the answer
Odd
What is 21,673 + 10?
Show the answer
21,683
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 21,673 in words?
21,673 is written "twenty-one thousand six hundred seventy-three".
Is 21,673 a prime number?
Yes. 21,673 is a prime number: its only factors are 1 and 21,673.
What are the factors of 21,673?
The factors of 21,673 are 1 and 21,673.