20,820 in words
20,820
twenty thousand eight hundred twenty
20,820 is written twenty thousand eight hundred twenty.
Ways to write it
- As an ordinal
- twenty thousand eight hundred twentieth
- Expanded form
- 20,000 + 800 + 20
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 0 | 0 |
| hundreds | 8 | 800 |
| tens | 2 | 20 |
| ones | 0 | 0 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 347, 694, 1,041, 1,388, 1,735, 2,082, 3,470, 4,164, 5,205, 6,940, 10,410 and 20,820 (24 factors)
- First 10 multiples
- 20,820, 41,640, 62,460, 83,280, 104,100, 124,920, 145,740, 166,560, 187,380, 208,200
- Square
- 20,820 × 20,820 = 433,472,400
- Square root
- ≈ 144.29
- Sum of the digits
- 2 + 0 + 8 + 2 + 0 = 12
- Rounded to the nearest 10
- 20,820
- Rounded to the nearest 100
- 20,800
- Rounded to the nearest 1000
- 21,000
- Number before
- 20,819
- Number after
- 20,821
- In binary
101000101010100
Quick check
What number comes just after 20,820?
Show the answer
20,821
Is 20,820 even or odd?
Show the answer
Even
What is 20,820 + 10?
Show the answer
20,830
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 20,820 in words?
20,820 is written "twenty thousand eight hundred twenty".
Is 20,820 a prime number?
No. 20,820 is a composite number, because it has more than two factors.
What are the factors of 20,820?
The factors of 20,820 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 347, 694, 1,041, 1,388, 1,735, 2,082, 3,470, 4,164, 5,205, 6,940, 10,410 and 20,820.