321,640 in words
321,640
three hundred and twenty-one thousand six hundred and forty
321,640 is written three hundred and twenty-one thousand six hundred and forty.
Ways to write it
- As an ordinal
- three hundred and twenty-one thousand six hundred and fortieth
- Expanded form
- 300,000 + 20,000 + 1,000 + 600 + 40
Place value
| Place | Digit | Value |
|---|---|---|
| hundred thousands | 3 | 300,000 |
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 6 | 600 |
| tens | 4 | 40 |
| ones | 0 | 0 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 64 factors: too many to list
- First 10 multiples
- 321,640, 643,280, 964,920, 1,286,560, 1,608,200, 1,929,840, 2,251,480, 2,573,120, 2,894,760, 3,216,400
- Square
- 321,640 × 321,640 = 103,452,289,600
- Square root
- ≈ 567.13
- Sum of the digits
- 3 + 2 + 1 + 6 + 4 + 0 = 16
- Rounded to the nearest 10
- 321,640
- Rounded to the nearest 100
- 321,600
- Rounded to the nearest 1000
- 322,000
- Number before
- 321,639
- Number after
- 321,641
- In binary
1001110100001101000
Quick check
What number comes just after 321,640?
Show the answer
321,641
Is 321,640 even or odd?
Show the answer
Even
What is 321,640 + 10?
Show the answer
321,650
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 321,640 in words?
321,640 is written "three hundred and twenty-one thousand six hundred and forty".
Is 321,640 a prime number?
No. 321,640 is a composite number, because it has more than two factors.