18,420 in words
18,420
eighteen thousand four hundred twenty
18,420 is written eighteen thousand four hundred twenty.
Ways to write it
- As an ordinal
- eighteen thousand four hundred twentieth
- Expanded form
- 10,000 + 8,000 + 400 + 20
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 1 | 10,000 |
| thousands | 8 | 8,000 |
| hundreds | 4 | 400 |
| tens | 2 | 20 |
| ones | 0 | 0 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 307, 614, 921, 1,228, 1,535, 1,842, 3,070, 3,684, 4,605, 6,140, 9,210 and 18,420 (24 factors)
- First 10 multiples
- 18,420, 36,840, 55,260, 73,680, 92,100, 110,520, 128,940, 147,360, 165,780, 184,200
- Square
- 18,420 × 18,420 = 339,296,400
- Square root
- ≈ 135.72
- Sum of the digits
- 1 + 8 + 4 + 2 + 0 = 15
- Rounded to the nearest 10
- 18,420
- Rounded to the nearest 100
- 18,400
- Rounded to the nearest 1000
- 18,000
- Number before
- 18,419
- Number after
- 18,421
- In binary
100011111110100
Quick check
What number comes just after 18,420?
Show the answer
18,421
Is 18,420 even or odd?
Show the answer
Even
What is 18,420 + 10?
Show the answer
18,430
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 18,420 in words?
18,420 is written "eighteen thousand four hundred twenty".
Is 18,420 a prime number?
No. 18,420 is a composite number, because it has more than two factors.
What are the factors of 18,420?
The factors of 18,420 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 307, 614, 921, 1,228, 1,535, 1,842, 3,070, 3,684, 4,605, 6,140, 9,210 and 18,420.