28,240 in words
28,240
twenty-eight thousand two hundred forty
28,240 is written twenty-eight thousand two hundred forty.
Ways to write it
- As an ordinal
- twenty-eight thousand two hundred fortieth
- Expanded form
- 20,000 + 8,000 + 200 + 40
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 8 | 8,000 |
| hundreds | 2 | 200 |
| tens | 4 | 40 |
| ones | 0 | 0 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 353, 706, 1,412, 1,765, 2,824, 3,530, 5,648, 7,060, 14,120 and 28,240 (20 factors)
- First 10 multiples
- 28,240, 56,480, 84,720, 112,960, 141,200, 169,440, 197,680, 225,920, 254,160, 282,400
- Square
- 28,240 × 28,240 = 797,497,600
- Square root
- ≈ 168.05
- Sum of the digits
- 2 + 8 + 2 + 4 + 0 = 16
- Rounded to the nearest 10
- 28,240
- Rounded to the nearest 100
- 28,200
- Rounded to the nearest 1000
- 28,000
- Number before
- 28,239
- Number after
- 28,241
- In binary
110111001010000
Quick check
What number comes just after 28,240?
Show the answer
28,241
Is 28,240 even or odd?
Show the answer
Even
What is 28,240 + 10?
Show the answer
28,250
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 28,240 in words?
28,240 is written "twenty-eight thousand two hundred forty".
Is 28,240 a prime number?
No. 28,240 is a composite number, because it has more than two factors.
What are the factors of 28,240?
The factors of 28,240 are 1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 353, 706, 1,412, 1,765, 2,824, 3,530, 5,648, 7,060, 14,120 and 28,240.