21,827 in words
21,827
twenty-one thousand eight hundred twenty-seven
21,827 is written twenty-one thousand eight hundred twenty-seven.
Ways to write it
- As an ordinal
- twenty-one thousand eight hundred twenty-seventh
- Expanded form
- 20,000 + 1,000 + 800 + 20 + 7
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 8 | 800 |
| tens | 2 | 20 |
| ones | 7 | 7 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 13, 23, 73, 299, 949, 1,679 and 21,827 (8 factors)
- First 10 multiples
- 21,827, 43,654, 65,481, 87,308, 109,135, 130,962, 152,789, 174,616, 196,443, 218,270
- Square
- 21,827 × 21,827 = 476,417,929
- Square root
- ≈ 147.74
- Sum of the digits
- 2 + 1 + 8 + 2 + 7 = 20
- Rounded to the nearest 10
- 21,830
- Rounded to the nearest 100
- 21,800
- Rounded to the nearest 1000
- 22,000
- Number before
- 21,826
- Number after
- 21,828
- In binary
101010101000011
Quick check
What number comes just after 21,827?
Show the answer
21,828
Is 21,827 even or odd?
Show the answer
Odd
What is 21,827 + 10?
Show the answer
21,837
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 21,827 in words?
21,827 is written "twenty-one thousand eight hundred twenty-seven".
Is 21,827 a prime number?
No. 21,827 is a composite number, because it has more than two factors.
What are the factors of 21,827?
The factors of 21,827 are 1, 13, 23, 73, 299, 949, 1,679 and 21,827.