21,480 in words
21,480
twenty-one thousand four hundred eighty
21,480 is written twenty-one thousand four hundred eighty.
Ways to write it
- As an ordinal
- twenty-one thousand four hundred eightieth
- Expanded form
- 20,000 + 1,000 + 400 + 80
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 4 | 400 |
| tens | 8 | 80 |
| ones | 0 | 0 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 179, 358, 537, 716, 895, 1,074, 1,432, 1,790, 2,148, 2,685, 3,580, 4,296, 5,370, 7,160, 10,740 and 21,480 (32 factors)
- First 10 multiples
- 21,480, 42,960, 64,440, 85,920, 107,400, 128,880, 150,360, 171,840, 193,320, 214,800
- Square
- 21,480 × 21,480 = 461,390,400
- Square root
- ≈ 146.56
- Sum of the digits
- 2 + 1 + 4 + 8 + 0 = 15
- Rounded to the nearest 10
- 21,480
- Rounded to the nearest 100
- 21,500
- Rounded to the nearest 1000
- 21,000
- Number before
- 21,479
- Number after
- 21,481
- In binary
101001111101000
Quick check
What number comes just after 21,480?
Show the answer
21,481
Is 21,480 even or odd?
Show the answer
Even
What is 21,480 + 10?
Show the answer
21,490
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 21,480 in words?
21,480 is written "twenty-one thousand four hundred eighty".
Is 21,480 a prime number?
No. 21,480 is a composite number, because it has more than two factors.
What are the factors of 21,480?
The factors of 21,480 are 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 179, 358, 537, 716, 895, 1,074, 1,432, 1,790, 2,148, 2,685, 3,580, 4,296, 5,370, 7,160, 10,740 and 21,480.