27,990 in words
27,990
twenty-seven thousand nine hundred ninety
27,990 is written twenty-seven thousand nine hundred ninety.
Ways to write it
- As an ordinal
- twenty-seven thousand nine hundred ninetieth
- Expanded form
- 20,000 + 7,000 + 900 + 90
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 7 | 7,000 |
| hundreds | 9 | 900 |
| tens | 9 | 90 |
| ones | 0 | 0 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 311, 622, 933, 1,555, 1,866, 2,799, 3,110, 4,665, 5,598, 9,330, 13,995 and 27,990 (24 factors)
- First 10 multiples
- 27,990, 55,980, 83,970, 111,960, 139,950, 167,940, 195,930, 223,920, 251,910, 279,900
- Square
- 27,990 × 27,990 = 783,440,100
- Square root
- ≈ 167.30
- Sum of the digits
- 2 + 7 + 9 + 9 + 0 = 27
- Rounded to the nearest 10
- 27,990
- Rounded to the nearest 100
- 28,000
- Rounded to the nearest 1000
- 28,000
- Number before
- 27,989
- Number after
- 27,991
- In binary
110110101010110
Quick check
What number comes just after 27,990?
Show the answer
27,991
Is 27,990 even or odd?
Show the answer
Even
What is 27,990 + 10?
Show the answer
28,000
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 27,990 in words?
27,990 is written "twenty-seven thousand nine hundred ninety".
Is 27,990 a prime number?
No. 27,990 is a composite number, because it has more than two factors.
What are the factors of 27,990?
The factors of 27,990 are 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 311, 622, 933, 1,555, 1,866, 2,799, 3,110, 4,665, 5,598, 9,330, 13,995 and 27,990.