20,987 in words
20,987
twenty thousand nine hundred eighty-seven
20,987 is written twenty thousand nine hundred eighty-seven.
Ways to write it
- As an ordinal
- twenty thousand nine hundred eighty-seventh
- Expanded form
- 20,000 + 900 + 80 + 7
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 0 | 0 |
| hundreds | 9 | 900 |
| tens | 8 | 80 |
| ones | 7 | 7 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 31, 677 and 20,987 (4 factors)
- First 10 multiples
- 20,987, 41,974, 62,961, 83,948, 104,935, 125,922, 146,909, 167,896, 188,883, 209,870
- Square
- 20,987 × 20,987 = 440,454,169
- Square root
- ≈ 144.87
- Sum of the digits
- 2 + 0 + 9 + 8 + 7 = 26
- Rounded to the nearest 10
- 20,990
- Rounded to the nearest 100
- 21,000
- Rounded to the nearest 1000
- 21,000
- Number before
- 20,986
- Number after
- 20,988
- In binary
101000111111011
Quick check
What number comes just after 20,987?
Show the answer
20,988
Is 20,987 even or odd?
Show the answer
Odd
What is 20,987 + 10?
Show the answer
20,997
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 20,987 in words?
20,987 is written "twenty thousand nine hundred eighty-seven".
Is 20,987 a prime number?
No. 20,987 is a composite number, because it has more than two factors.
What are the factors of 20,987?
The factors of 20,987 are 1, 31, 677 and 20,987.