428 in words
428
four hundred and twenty-eight
428 is written four hundred and twenty-eight.
Ways to write it
- As an ordinal
- four hundred and twenty-eighth
- Roman numeral
- CDXXVIII
- Expanded form
- 400 + 20 + 8
Place value
| Place | Digit | Value |
|---|---|---|
| hundreds | 4 | 400 |
| tens | 2 | 20 |
| ones | 8 | 8 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 4, 107, 214 and 428 (6 factors)
- First 10 multiples
- 428, 856, 1,284, 1,712, 2,140, 2,568, 2,996, 3,424, 3,852, 4,280
- Square
- 428 × 428 = 183,184
- Square root
- ≈ 20.69
- Sum of the digits
- 4 + 2 + 8 = 14
- Rounded to the nearest 10
- 430
- Rounded to the nearest 100
- 400
- Number before
- 427
- Number after
- 429
- In binary
110101100
Quick check
What number comes just after 428?
Show the answer
429
Is 428 even or odd?
Show the answer
Even
What is 428 + 10?
Show the answer
438
Practise with a game
Factors, Multiples & Primes
Multiples, factors, prime numbers, square numbers and prime factors.
Roman Numerals
Read and write Roman numerals from I to 3,999.Frequently asked questions
How do you write 428 in words?
428 is written "four hundred and twenty-eight".
Is 428 a prime number?
No. 428 is a composite number, because it has more than two factors.
What are the factors of 428?
The factors of 428 are 1, 2, 4, 107, 214 and 428.
How do you write 428 in Roman numerals?
428 in Roman numerals is CDXXVIII.