428,720 in words
428,720
four hundred twenty-eight thousand seven hundred twenty
428,720 is written four hundred twenty-eight thousand seven hundred twenty.
Ways to write it
- As an ordinal
- four hundred twenty-eight thousand seven hundred twentieth
- Expanded form
- 400,000 + 20,000 + 8,000 + 700 + 20
Place value
| Place | Digit | Value |
|---|---|---|
| hundred thousands | 4 | 400,000 |
| ten thousands | 2 | 20,000 |
| thousands | 8 | 8,000 |
| hundreds | 7 | 700 |
| tens | 2 | 20 |
| ones | 0 | 0 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 233, 368, 460, 466, 920, 932, 1,165, 1,840, 1,864, 2,330, 3,728, 4,660, 5,359, 9,320, 10,718, 18,640, 21,436, 26,795, 42,872, 53,590, 85,744, 107,180, 214,360 and 428,720 (40 factors)
- First 10 multiples
- 428,720, 857,440, 1,286,160, 1,714,880, 2,143,600, 2,572,320, 3,001,040, 3,429,760, 3,858,480, 4,287,200
- Square
- 428,720 × 428,720 = 183,800,838,400
- Square root
- ≈ 654.77
- Sum of the digits
- 4 + 2 + 8 + 7 + 2 + 0 = 23
- Rounded to the nearest 10
- 428,720
- Rounded to the nearest 100
- 428,700
- Rounded to the nearest 1000
- 429,000
- Number before
- 428,719
- Number after
- 428,721
- In binary
1101000101010110000
Quick check
What number comes just after 428,720?
Show the answer
428,721
Is 428,720 even or odd?
Show the answer
Even
What is 428,720 + 10?
Show the answer
428,730
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 428,720 in words?
428,720 is written "four hundred twenty-eight thousand seven hundred twenty".
Is 428,720 a prime number?
No. 428,720 is a composite number, because it has more than two factors.
What are the factors of 428,720?
The factors of 428,720 are 1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 233, 368, 460, 466, 920, 932, 1,165, 1,840, 1,864, 2,330, 3,728, 4,660, 5,359, 9,320, 10,718, 18,640, 21,436, 26,795, 42,872, 53,590, 85,744, 107,180, 214,360 and 428,720.