21,616 in words
21,616
twenty-one thousand six hundred sixteen
21,616 is written twenty-one thousand six hundred sixteen.
Ways to write it
- As an ordinal
- twenty-one thousand six hundred sixteenth
- Expanded form
- 20,000 + 1,000 + 600 + 10 + 6
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 6 | 600 |
| tens | 1 | 10 |
| ones | 6 | 6 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 193, 386, 772, 1,351, 1,544, 2,702, 3,088, 5,404, 10,808 and 21,616 (20 factors)
- First 10 multiples
- 21,616, 43,232, 64,848, 86,464, 108,080, 129,696, 151,312, 172,928, 194,544, 216,160
- Square
- 21,616 × 21,616 = 467,251,456
- Square root
- ≈ 147.02
- Sum of the digits
- 2 + 1 + 6 + 1 + 6 = 16
- Rounded to the nearest 10
- 21,620
- Rounded to the nearest 100
- 21,600
- Rounded to the nearest 1000
- 22,000
- Number before
- 21,615
- Number after
- 21,617
- In binary
101010001110000
Quick check
What number comes just after 21,616?
Show the answer
21,617
Is 21,616 even or odd?
Show the answer
Even
What is 21,616 + 10?
Show the answer
21,626
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 21,616 in words?
21,616 is written "twenty-one thousand six hundred sixteen".
Is 21,616 a prime number?
No. 21,616 is a composite number, because it has more than two factors.
What are the factors of 21,616?
The factors of 21,616 are 1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 193, 386, 772, 1,351, 1,544, 2,702, 3,088, 5,404, 10,808 and 21,616.