20,801 in words
20,801
twenty thousand eight hundred one
20,801 is written twenty thousand eight hundred one.
Ways to write it
- As an ordinal
- twenty thousand eight hundred first
- Expanded form
- 20,000 + 800 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 0 | 0 |
| hundreds | 8 | 800 |
| tens | 0 | 0 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 11, 31, 61, 341, 671, 1,891 and 20,801 (8 factors)
- First 10 multiples
- 20,801, 41,602, 62,403, 83,204, 104,005, 124,806, 145,607, 166,408, 187,209, 208,010
- Square
- 20,801 × 20,801 = 432,681,601
- Square root
- ≈ 144.23
- Sum of the digits
- 2 + 0 + 8 + 0 + 1 = 11
- Rounded to the nearest 10
- 20,800
- Rounded to the nearest 100
- 20,800
- Rounded to the nearest 1000
- 21,000
- Number before
- 20,800
- Number after
- 20,802
- In binary
101000101000001
Quick check
What number comes just after 20,801?
Show the answer
20,802
Is 20,801 even or odd?
Show the answer
Odd
What is 20,801 + 10?
Show the answer
20,811
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 20,801 in words?
20,801 is written "twenty thousand eight hundred one".
Is 20,801 a prime number?
No. 20,801 is a composite number, because it has more than two factors.
What are the factors of 20,801?
The factors of 20,801 are 1, 11, 31, 61, 341, 671, 1,891 and 20,801.