340,821 in words
340,821
three hundred forty thousand eight hundred twenty-one
340,821 is written three hundred forty thousand eight hundred twenty-one.
Ways to write it
- As an ordinal
- three hundred forty thousand eight hundred twenty-first
- Expanded form
- 300,000 + 40,000 + 800 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| hundred thousands | 3 | 300,000 |
| ten thousands | 4 | 40,000 |
| thousands | 0 | 0 |
| hundreds | 8 | 800 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 3, 9, 13, 27, 39, 117, 351, 971, 2,913, 8,739, 12,623, 26,217, 37,869, 113,607 and 340,821 (16 factors)
- First 10 multiples
- 340,821, 681,642, 1,022,463, 1,363,284, 1,704,105, 2,044,926, 2,385,747, 2,726,568, 3,067,389, 3,408,210
- Square
- 340,821 × 340,821 = 116,158,954,041
- Square root
- ≈ 583.80
- Sum of the digits
- 3 + 4 + 0 + 8 + 2 + 1 = 18
- Rounded to the nearest 10
- 340,820
- Rounded to the nearest 100
- 340,800
- Rounded to the nearest 1000
- 341,000
- Number before
- 340,820
- Number after
- 340,822
- In binary
1010011001101010101
Quick check
What number comes just after 340,821?
Show the answer
340,822
Is 340,821 even or odd?
Show the answer
Odd
What is 340,821 + 10?
Show the answer
340,831
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 340,821 in words?
340,821 is written "three hundred forty thousand eight hundred twenty-one".
Is 340,821 a prime number?
No. 340,821 is a composite number, because it has more than two factors.
What are the factors of 340,821?
The factors of 340,821 are 1, 3, 9, 13, 27, 39, 117, 351, 971, 2,913, 8,739, 12,623, 26,217, 37,869, 113,607 and 340,821.