1991220
1,991,220 is an even composite number composed of six prime numbers multiplied together.
1991220 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 1991220:
22 × 3 × 5 × 7 × 11 × 431
(2 × 2 × 3 × 5 × 7 × 11 × 431)See below for interesting mathematical facts about the number 1991220 from the Numbermatics database.
Names of 1991220
- Cardinal: 1991220 can be written as One million, nine hundred ninety-one thousand, two hundred twenty.
Scientific notation
- Scientific notation: 1.99122 × 106
Factors of 1991220
Divisors of 1991220
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 3 4 5 6 7 10 11 12 14 15 20 21 22 28 30 33 35 42 44 55 60 66 70 77 84 105 110 132 140 154 165 210 220 231 308 330 385 420 431 462 660 770 862 924 1155 1293 1540 1724 2155 2310 2586 3017 4310 4620 4741 5172 6034 6465 8620 9051 9482 12068 12930 14223 15085 18102 18964 23705 25860 28446 30170 33187 36204 45255 47410 56892 60340 66374 71115 90510 94820 99561 132748 142230 165935 181020 199122 284460 331870 398244 497805 663740 995610 1991220
- Sum of all divisors σ(n): 6967296
- Sum of proper divisors (its aliquot sum) s(n): 4976076
- 1991220 is an abundant number, because the sum of its proper divisors (4976076) is greater than itself. Its abundance is 2984856
Bases of 1991220
- Binary: 1111001100010001101002
- Hexadecimal: 0x1E6234
- Base-36: 16OFO
Squares and roots of 1991220
- 1991220 squared (19912202) is 3964957088400
- 1991220 cubed (19912203) is 7895101853563848000
-
The
square root of 1991220 is 1411.1059492471 -
The
cube root of 1991220 is 125.8074660903
Scales and comparisons
How big is 1991220?- 1,991,220 seconds is equal to 3 weeks, 2 days, 1 hour, 7 minutes.
-
To count from 1 to 1,991,220 would take you about four weeks!
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 1991220 cubic inches would be around 10.5 feet tall.
Recreational maths with 1991220
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The information we have on file for 1991220 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!
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