21,370 in words
21,370
twenty-one thousand three hundred seventy
21,370 is written twenty-one thousand three hundred seventy.
Ways to write it
- As an ordinal
- twenty-one thousand three hundred seventieth
- Expanded form
- 20,000 + 1,000 + 300 + 70
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 3 | 300 |
| tens | 7 | 70 |
| ones | 0 | 0 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 5, 10, 2,137, 4,274, 10,685 and 21,370 (8 factors)
- First 10 multiples
- 21,370, 42,740, 64,110, 85,480, 106,850, 128,220, 149,590, 170,960, 192,330, 213,700
- Square
- 21,370 × 21,370 = 456,676,900
- Square root
- ≈ 146.18
- Sum of the digits
- 2 + 1 + 3 + 7 + 0 = 13
- Rounded to the nearest 10
- 21,370
- Rounded to the nearest 100
- 21,400
- Rounded to the nearest 1000
- 21,000
- Number before
- 21,369
- Number after
- 21,371
- In binary
101001101111010
Quick check
What number comes just after 21,370?
Show the answer
21,371
Is 21,370 even or odd?
Show the answer
Even
What is 21,370 + 10?
Show the answer
21,380
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 21,370 in words?
21,370 is written "twenty-one thousand three hundred seventy".
Is 21,370 a prime number?
No. 21,370 is a composite number, because it has more than two factors.
What are the factors of 21,370?
The factors of 21,370 are 1, 2, 5, 10, 2,137, 4,274, 10,685 and 21,370.