20,729 in words
20,729
twenty thousand seven hundred twenty-nine
20,729 is written twenty thousand seven hundred twenty-nine.
Ways to write it
- As an ordinal
- twenty thousand seven hundred twenty-ninth
- Expanded form
- 20,000 + 700 + 20 + 9
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 0 | 0 |
| hundreds | 7 | 700 |
| tens | 2 | 20 |
| ones | 9 | 9 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 19, 1,091 and 20,729 (4 factors)
- First 10 multiples
- 20,729, 41,458, 62,187, 82,916, 103,645, 124,374, 145,103, 165,832, 186,561, 207,290
- Square
- 20,729 × 20,729 = 429,691,441
- Square root
- ≈ 143.98
- Sum of the digits
- 2 + 0 + 7 + 2 + 9 = 20
- Rounded to the nearest 10
- 20,730
- Rounded to the nearest 100
- 20,700
- Rounded to the nearest 1000
- 21,000
- Number before
- 20,728
- Number after
- 20,730
- In binary
101000011111001
Quick check
What number comes just after 20,729?
Show the answer
20,730
Is 20,729 even or odd?
Show the answer
Odd
What is 20,729 + 10?
Show the answer
20,739
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 20,729 in words?
20,729 is written "twenty thousand seven hundred twenty-nine".
Is 20,729 a prime number?
No. 20,729 is a composite number, because it has more than two factors.
What are the factors of 20,729?
The factors of 20,729 are 1, 19, 1,091 and 20,729.