21,470 in words
21,470
twenty-one thousand four hundred seventy
21,470 is written twenty-one thousand four hundred seventy.
Ways to write it
- As an ordinal
- twenty-one thousand four hundred seventieth
- Expanded form
- 20,000 + 1,000 + 400 + 70
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 4 | 400 |
| tens | 7 | 70 |
| ones | 0 | 0 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 5, 10, 19, 38, 95, 113, 190, 226, 565, 1,130, 2,147, 4,294, 10,735 and 21,470 (16 factors)
- First 10 multiples
- 21,470, 42,940, 64,410, 85,880, 107,350, 128,820, 150,290, 171,760, 193,230, 214,700
- Square
- 21,470 × 21,470 = 460,960,900
- Square root
- ≈ 146.53
- Sum of the digits
- 2 + 1 + 4 + 7 + 0 = 14
- Rounded to the nearest 10
- 21,470
- Rounded to the nearest 100
- 21,500
- Rounded to the nearest 1000
- 21,000
- Number before
- 21,469
- Number after
- 21,471
- In binary
101001111011110
Quick check
What number comes just after 21,470?
Show the answer
21,471
Is 21,470 even or odd?
Show the answer
Even
What is 21,470 + 10?
Show the answer
21,480
Practice 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 21,470 in words?
21,470 is written "twenty-one thousand four hundred seventy".
Is 21,470 a prime number?
No. 21,470 is a composite number, because it has more than two factors.
What are the factors of 21,470?
The factors of 21,470 are 1, 2, 5, 10, 19, 38, 95, 113, 190, 226, 565, 1,130, 2,147, 4,294, 10,735 and 21,470.