20,998 in words
20,998
twenty thousand nine hundred ninety-eight
20,998 is written twenty thousand nine hundred ninety-eight.
Ways to write it
- As an ordinal
- twenty thousand nine hundred ninety-eighth
- Expanded form
- 20,000 + 900 + 90 + 8
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 0 | 0 |
| hundreds | 9 | 900 |
| tens | 9 | 90 |
| ones | 8 | 8 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 10,499 and 20,998 (4 factors)
- First 10 multiples
- 20,998, 41,996, 62,994, 83,992, 104,990, 125,988, 146,986, 167,984, 188,982, 209,980
- Square
- 20,998 × 20,998 = 440,916,004
- Square root
- ≈ 144.91
- Sum of the digits
- 2 + 0 + 9 + 9 + 8 = 28
- Rounded to the nearest 10
- 21,000
- Rounded to the nearest 100
- 21,000
- Rounded to the nearest 1000
- 21,000
- Number before
- 20,997
- Number after
- 20,999
- In binary
101001000000110
Quick check
What number comes just after 20,998?
Show the answer
20,999
Is 20,998 even or odd?
Show the answer
Even
What is 20,998 + 10?
Show the answer
21,008
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 20,998 in words?
20,998 is written "twenty thousand nine hundred ninety-eight".
Is 20,998 a prime number?
No. 20,998 is a composite number, because it has more than two factors.
What are the factors of 20,998?
The factors of 20,998 are 1, 2, 10,499 and 20,998.