21,472 in words
21,472
twenty-one thousand four hundred seventy-two
21,472 is written twenty-one thousand four hundred seventy-two.
Ways to write it
- As an ordinal
- twenty-one thousand four hundred seventy-second
- Expanded form
- 20,000 + 1,000 + 400 + 70 + 2
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 4 | 400 |
| tens | 7 | 70 |
| ones | 2 | 2 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 4, 8, 11, 16, 22, 32, 44, 61, 88, 122, 176, 244, 352, 488, 671, 976, 1,342, 1,952, 2,684, 5,368, 10,736 and 21,472 (24 factors)
- First 10 multiples
- 21,472, 42,944, 64,416, 85,888, 107,360, 128,832, 150,304, 171,776, 193,248, 214,720
- Square
- 21,472 × 21,472 = 461,046,784
- Square root
- ≈ 146.53
- Sum of the digits
- 2 + 1 + 4 + 7 + 2 = 16
- Rounded to the nearest 10
- 21,470
- Rounded to the nearest 100
- 21,500
- Rounded to the nearest 1000
- 21,000
- Number before
- 21,471
- Number after
- 21,473
- In binary
101001111100000
Quick check
What number comes just after 21,472?
Show the answer
21,473
Is 21,472 even or odd?
Show the answer
Even
What is 21,472 + 10?
Show the answer
21,482
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 21,472 in words?
21,472 is written "twenty-one thousand four hundred seventy-two".
Is 21,472 a prime number?
No. 21,472 is a composite number, because it has more than two factors.
What are the factors of 21,472?
The factors of 21,472 are 1, 2, 4, 8, 11, 16, 22, 32, 44, 61, 88, 122, 176, 244, 352, 488, 671, 976, 1,342, 1,952, 2,684, 5,368, 10,736 and 21,472.