21,360 in words
21,360
twenty-one thousand three hundred sixty
21,360 is written twenty-one thousand three hundred sixty.
Ways to write it
- As an ordinal
- twenty-one thousand three hundred sixtieth
- Expanded form
- 20,000 + 1,000 + 300 + 60
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 3 | 300 |
| tens | 6 | 60 |
| ones | 0 | 0 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 89, 120, 178, 240, 267, 356, 445, 534, 712, 890, 1,068, 1,335, 1,424, 1,780, 2,136, 2,670, 3,560, 4,272, 5,340, 7,120, 10,680 and 21,360 (40 factors)
- First 10 multiples
- 21,360, 42,720, 64,080, 85,440, 106,800, 128,160, 149,520, 170,880, 192,240, 213,600
- Square
- 21,360 × 21,360 = 456,249,600
- Square root
- ≈ 146.15
- Sum of the digits
- 2 + 1 + 3 + 6 + 0 = 12
- Rounded to the nearest 10
- 21,360
- Rounded to the nearest 100
- 21,400
- Rounded to the nearest 1000
- 21,000
- Number before
- 21,359
- Number after
- 21,361
- In binary
101001101110000
Quick check
What number comes just after 21,360?
Show the answer
21,361
Is 21,360 even or odd?
Show the answer
Even
What is 21,360 + 10?
Show the answer
21,370
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 21,360 in words?
21,360 is written "twenty-one thousand three hundred sixty".
Is 21,360 a prime number?
No. 21,360 is a composite number, because it has more than two factors.
What are the factors of 21,360?
The factors of 21,360 are 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 89, 120, 178, 240, 267, 356, 445, 534, 712, 890, 1,068, 1,335, 1,424, 1,780, 2,136, 2,670, 3,560, 4,272, 5,340, 7,120, 10,680 and 21,360.