20,009 in words
20,009
twenty thousand and nine
20,009 is written twenty thousand and nine.
Ways to write it
- As an ordinal
- twenty thousand and ninth
- Expanded form
- 20,000 + 9
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 0 | 0 |
| hundreds | 0 | 0 |
| tens | 0 | 0 |
| ones | 9 | 9 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 11, 17, 107, 187, 1,177, 1,819 and 20,009 (8 factors)
- First 10 multiples
- 20,009, 40,018, 60,027, 80,036, 1,00,045, 1,20,054, 1,40,063, 1,60,072, 1,80,081, 2,00,090
- Square
- 20,009 × 20,009 = 40,03,60,081
- Square root
- ≈ 141.45
- Sum of the digits
- 2 + 0 + 0 + 0 + 9 = 11
- Rounded to the nearest 10
- 20,010
- Rounded to the nearest 100
- 20,000
- Rounded to the nearest 1000
- 20,000
- Number before
- 20,008
- Number after
- 20,010
- In binary
100111000101001
Quick check
What number comes just after 20,009?
Show the answer
20,010
Is 20,009 even or odd?
Show the answer
Odd
What is 20,009 + 10?
Show the answer
20,019
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 20,009 in words?
20,009 is written "twenty thousand and nine".
Is 20,009 a prime number?
No. 20,009 is a composite number, because it has more than two factors.
What are the factors of 20,009?
The factors of 20,009 are 1, 11, 17, 107, 187, 1,177, 1,819 and 20,009.