428,021 in words
428,021
four hundred and twenty-eight thousand and twenty-one
428,021 is written four hundred and twenty-eight thousand and twenty-one.
Ways to write it
- As an ordinal
- four hundred and twenty-eight thousand and twenty-first
- Expanded form
- 400,000 + 20,000 + 8,000 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| hundred thousands | 4 | 400,000 |
| ten thousands | 2 | 20,000 |
| thousands | 8 | 8,000 |
| hundreds | 0 | 0 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 11, 167, 233, 1,837, 2,563, 38,911 and 428,021 (8 factors)
- First 10 multiples
- 428,021, 856,042, 1,284,063, 1,712,084, 2,140,105, 2,568,126, 2,996,147, 3,424,168, 3,852,189, 4,280,210
- Square
- 428,021 × 428,021 = 183,201,976,441
- Square root
- ≈ 654.23
- Sum of the digits
- 4 + 2 + 8 + 0 + 2 + 1 = 17
- Rounded to the nearest 10
- 428,020
- Rounded to the nearest 100
- 428,000
- Rounded to the nearest 1000
- 428,000
- Number before
- 428,020
- Number after
- 428,022
- In binary
1101000011111110101
Quick check
What number comes just after 428,021?
Show the answer
428,022
Is 428,021 even or odd?
Show the answer
Odd
What is 428,021 + 10?
Show the answer
428,031
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 428,021 in words?
428,021 is written "four hundred and twenty-eight thousand and twenty-one".
Is 428,021 a prime number?
No. 428,021 is a composite number, because it has more than two factors.
What are the factors of 428,021?
The factors of 428,021 are 1, 11, 167, 233, 1,837, 2,563, 38,911 and 428,021.