428,421 in words
428,421
four hundred twenty-eight thousand four hundred twenty-one
428,421 is written four hundred twenty-eight thousand four hundred twenty-one.
Ways to write it
- As an ordinal
- four hundred twenty-eight thousand four hundred twenty-first
- Expanded form
- 400,000 + 20,000 + 8,000 + 400 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| hundred thousands | 4 | 400,000 |
| ten thousands | 2 | 20,000 |
| thousands | 8 | 8,000 |
| hundreds | 4 | 400 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 3, 7, 21, 23, 69, 161, 483, 887, 2,661, 6,209, 18,627, 20,401, 61,203, 142,807 and 428,421 (16 factors)
- First 10 multiples
- 428,421, 856,842, 1,285,263, 1,713,684, 2,142,105, 2,570,526, 2,998,947, 3,427,368, 3,855,789, 4,284,210
- Square
- 428,421 × 428,421 = 183,544,553,241
- Square root
- ≈ 654.54
- Sum of the digits
- 4 + 2 + 8 + 4 + 2 + 1 = 21
- Rounded to the nearest 10
- 428,420
- Rounded to the nearest 100
- 428,400
- Rounded to the nearest 1000
- 428,000
- Number before
- 428,420
- Number after
- 428,422
- In binary
1101000100110000101
Quick check
What number comes just after 428,421?
Show the answer
428,422
Is 428,421 even or odd?
Show the answer
Odd
What is 428,421 + 10?
Show the answer
428,431
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 428,421 in words?
428,421 is written "four hundred twenty-eight thousand four hundred twenty-one".
Is 428,421 a prime number?
No. 428,421 is a composite number, because it has more than two factors.
What are the factors of 428,421?
The factors of 428,421 are 1, 3, 7, 21, 23, 69, 161, 483, 887, 2,661, 6,209, 18,627, 20,401, 61,203, 142,807 and 428,421.