991442816
991,442,816 is an even composite number composed of five prime numbers multiplied together.
991442816 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 991442816:
27 × 7 × 13 × 47 × 1811
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 7 × 13 × 47 × 1811)See below for interesting mathematical facts about the number 991442816 from the Numbermatics database.
Names of 991442816
- Cardinal: 991442816 can be written as Nine hundred ninety-one million, four hundred forty-two thousand, eight hundred sixteen.
Scientific notation
- Scientific notation: 9.91442816 × 108
Factors of 991442816
Divisors of 991442816
- Number of divisors d(n): 128
-
Complete list of divisors:
1 2 4 7 8 13 14 16 26 28 32 47 52 56 64 91 94 104 112 128 182 188 208 224 329 364 376 416 448 611 658 728 752 832 896 1222 1316 1456 1504 1664 1811 2444 2632 2912 3008 3622 4277 4888 5264 5824 6016 7244 8554 9776 10528 11648 12677 14488 17108 19552 21056 23543 25354 28976 34216 39104 42112 47086 50708 57952 68432 78208 85117 94172 101416 115904 136864 164801 170234 188344 202832 231808 273728 329602 340468 376688 405664 547456 595819 659204 680936 753376 811328 1106521 1191638 1318408 1361872 1506752 1622656 2213042 2383276 2636816 2723744 3013504 4426084 4766552 5273632 5447488 7745647 8852168 9533104 10547264 10894976 15491294 17704336 19066208 21094528 30982588 35408672 38132416 61965176 70817344 76264832 123930352 141634688 247860704 495721408 991442816
- Sum of all divisors σ(n): 2484034560
- Sum of proper divisors (its aliquot sum) s(n): 1492591744
- 991442816 is an abundant number, because the sum of its proper divisors (1492591744) is greater than itself. Its abundance is 501148928
Bases of 991442816
- Binary: 1110110001100000110111100000002
- Hexadecimal: 0x3B183780
- Base-36: GEA268
Squares and roots of 991442816
- 991442816 squared (9914428162) is 982958857398009856
- 991442816 cubed (9914428163) is 974547497590825324428394496
-
The
square root of 991442816 is 31487.1849488009 -
The
cube root of 991442816 is 997.1394302767
Scales and comparisons
How big is 991442816?- 991,442,816 seconds is equal to 31 years, 27 weeks, 2 days, 46 minutes, 56 seconds.
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To count from 1 to 991,442,816 would take you about forty-seven years!
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 991442816 cubic inches would be around 83.1 feet tall.
Recreational maths with 991442816
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