8821 is a prime number. Like all primes (except two), it is an odd number.
Prime factorization of 8821:
See below for interesting mathematical facts about the number 8821 from the Numbermatics database.
Names of 8821
- Cardinal: 8821 can be written as Eight thousand, eight hundred twenty-one.
- Scientific notation: 8.821 × 103
Factors of 8821
- Number of distinct prime factors ω(n): 1
- Total number of prime factors Ω(n): 1
- Sum of prime factors: 8821
Divisors of 8821
- Number of divisors d(n): 2
- Complete list of divisors:
- Sum of all divisors σ(n): 8822
- Sum of proper divisors (its aliquot sum) s(n): 1
- 8821 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 8820
Bases of 8821
- Binary: 100010011101012
- Hexadecimal: 0x2275
- Base-36: 6T1
Squares and roots of 8821
- 8821 squared (88212) is 77810041
- 8821 cubed (88213) is 686362371661
square rootof 8821 is 93.9201788753
cube rootof 8821 is 20.6620119011
Scales and comparisonsHow big is 8821?
- 8,821 seconds is equal to 2 hours, 27 minutes, 1 second.
To count from 1 to 8,821 would take you about two hours.
This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
- A cube with a volume of 8821 cubic inches would be around 1.7 feet tall.
Recreational maths with 8821
- 8821 backwards is 1288
- The number of decimal digits it has is: 4
- The sum of 8821's digits is 19
- More coming soon!
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Cite this page
"Number 8821 - Facts about the integer". Numbermatics.com. 2019. Web. 14 November 2019.
Numbermatics. (2019). Number 8821 - Facts about the integer. Retrieved 14 November 2019, from https://numbermatics.com/n/8821/
Numbermatics. 2019. "Number 8821 - Facts about the integer". https://numbermatics.com/n/8821/
The information we have on file for 8821 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!