72,009 in words
72,009
seventy-two thousand and nine
72,009 is written seventy-two thousand and nine.
Ways to write it
- As an ordinal
- seventy-two thousand and ninth
- Expanded form
- 70,000 + 2,000 + 9
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 7 | 70,000 |
| thousands | 2 | 2,000 |
| hundreds | 0 | 0 |
| tens | 0 | 0 |
| ones | 9 | 9 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 3, 7, 9, 21, 27, 63, 81, 127, 189, 381, 567, 889, 1,143, 2,667, 3,429, 8,001, 10,287, 24,003 and 72,009 (20 factors)
- First 10 multiples
- 72,009, 144,018, 216,027, 288,036, 360,045, 432,054, 504,063, 576,072, 648,081, 720,090
- Square
- 72,009 × 72,009 = 5,185,296,081
- Square root
- ≈ 268.34
- Sum of the digits
- 7 + 2 + 0 + 0 + 9 = 18
- Rounded to the nearest 10
- 72,010
- Rounded to the nearest 100
- 72,000
- Rounded to the nearest 1000
- 72,000
- Number before
- 72,008
- Number after
- 72,010
- In binary
10001100101001001
Quick check
What number comes just after 72,009?
Show the answer
72,010
Is 72,009 even or odd?
Show the answer
Odd
What is 72,009 + 10?
Show the answer
72,019
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 72,009 in words?
72,009 is written "seventy-two thousand and nine".
Is 72,009 a prime number?
No. 72,009 is a composite number, because it has more than two factors.
What are the factors of 72,009?
The factors of 72,009 are 1, 3, 7, 9, 21, 27, 63, 81, 127, 189, 381, 567, 889, 1,143, 2,667, 3,429, 8,001, 10,287, 24,003 and 72,009.