7,21,980 in words
7,21,980
seven lakh twenty-one thousand nine hundred and eighty
7,21,980 is written seven lakh twenty-one thousand nine hundred and eighty.
Ways to write it
- International system
- seven hundred and twenty-one thousand nine hundred and eighty
- Indian system
- seven lakh twenty-one thousand nine hundred and eighty
- As an ordinal
- seven lakh twenty-one thousand nine hundred and eightieth
- Expanded form
- 7,00,000 + 20,000 + 1,000 + 900 + 80
Place value
| Place | Digit | Value |
|---|---|---|
| lakhs | 7 | 7,00,000 |
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 9 | 900 |
| tens | 8 | 80 |
| ones | 0 | 0 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 96 factors: too many to list
- First 10 multiples
- 7,21,980, 14,43,960, 21,65,940, 28,87,920, 36,09,900, 43,31,880, 50,53,860, 57,75,840, 64,97,820, 72,19,800
- Square
- 7,21,980 × 7,21,980 = 5,21,25,51,20,400
- Square root
- ≈ 849.69
- Sum of the digits
- 7 + 2 + 1 + 9 + 8 + 0 = 27
- Rounded to the nearest 10
- 7,21,980
- Rounded to the nearest 100
- 7,22,000
- Rounded to the nearest 1000
- 7,22,000
- Number before
- 7,21,979
- Number after
- 7,21,981
- In binary
10110000010000111100
Quick check
What number comes just after 7,21,980?
Show the answer
7,21,981
Is 7,21,980 even or odd?
Show the answer
Even
What is 7,21,980 + 10?
Show the answer
7,21,990
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 7,21,980 in words?
7,21,980 is written "seven lakh twenty-one thousand nine hundred and eighty".
Is 7,21,980 a prime number?
No. 7,21,980 is a composite number, because it has more than two factors.