821,340 in words
821,340
eight hundred twenty-one thousand three hundred forty
821,340 is written eight hundred twenty-one thousand three hundred forty.
Ways to write it
- As an ordinal
- eight hundred twenty-one thousand three hundred fortieth
- Expanded form
- 800,000 + 20,000 + 1,000 + 300 + 40
Place value
| Place | Digit | Value |
|---|---|---|
| hundred thousands | 8 | 800,000 |
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 3 | 300 |
| tens | 4 | 40 |
| ones | 0 | 0 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 108 factors: too many to list
- First 10 multiples
- 821,340, 1,642,680, 2,464,020, 3,285,360, 4,106,700, 4,928,040, 5,749,380, 6,570,720, 7,392,060, 8,213,400
- Square
- 821,340 × 821,340 = 674,599,395,600
- Square root
- ≈ 906.28
- Sum of the digits
- 8 + 2 + 1 + 3 + 4 + 0 = 18
- Rounded to the nearest 10
- 821,340
- Rounded to the nearest 100
- 821,300
- Rounded to the nearest 1000
- 821,000
- Number before
- 821,339
- Number after
- 821,341
- In binary
11001000100001011100
Quick check
What number comes just after 821,340?
Show the answer
821,341
Is 821,340 even or odd?
Show the answer
Even
What is 821,340 + 10?
Show the answer
821,350
Practice with a game
Factors, Multiples & Primes
Multiples, factors, prime numbers, square numbers and prime factors.
Number Patterns
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How do you write 821,340 in words?
821,340 is written "eight hundred twenty-one thousand three hundred forty".
Is 821,340 a prime number?
No. 821,340 is a composite number, because it has more than two factors.