20,997 in words
20,997
twenty thousand nine hundred ninety-seven
20,997 is written twenty thousand nine hundred ninety-seven.
Ways to write it
- As an ordinal
- twenty thousand nine hundred ninety-seventh
- Expanded form
- 20,000 + 900 + 90 + 7
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 0 | 0 |
| hundreds | 9 | 900 |
| tens | 9 | 90 |
| ones | 7 | 7 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 3, 9, 2,333, 6,999 and 20,997 (6 factors)
- First 10 multiples
- 20,997, 41,994, 62,991, 83,988, 104,985, 125,982, 146,979, 167,976, 188,973, 209,970
- Square
- 20,997 × 20,997 = 440,874,009
- Square root
- ≈ 144.90
- Sum of the digits
- 2 + 0 + 9 + 9 + 7 = 27
- Rounded to the nearest 10
- 21,000
- Rounded to the nearest 100
- 21,000
- Rounded to the nearest 1000
- 21,000
- Number before
- 20,996
- Number after
- 20,998
- In binary
101001000000101
Quick check
What number comes just after 20,997?
Show the answer
20,998
Is 20,997 even or odd?
Show the answer
Odd
What is 20,997 + 10?
Show the answer
21,007
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 20,997 in words?
20,997 is written "twenty thousand nine hundred ninety-seven".
Is 20,997 a prime number?
No. 20,997 is a composite number, because it has more than two factors.
What are the factors of 20,997?
The factors of 20,997 are 1, 3, 9, 2,333, 6,999 and 20,997.