81303040
81,303,040 is an even composite number composed of five prime numbers multiplied together.
81303040 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred sixty divisors.
Prime factorization of 81303040:
29 × 5 × 7 × 13 × 349
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 7 × 13 × 349)See below for interesting mathematical facts about the number 81303040 from the Numbermatics database.
Names of 81303040
- Cardinal: 81303040 can be written as Eighty-one million, three hundred three thousand and forty.
Scientific notation
- Scientific notation: 8.130304 × 107
Factors of 81303040
Divisors of 81303040
- Number of divisors d(n): 160
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Complete list of divisors:
1 2 4 5 7 8 10 13 14 16 20 26 28 32 35 40 52 56 64 65 70 80 91 104 112 128 130 140 160 182 208 224 256 260 280 320 349 364 416 448 455 512 520 560 640 698 728 832 896 910 1040 1120 1280 1396 1456 1664 1745 1792 1820 2080 2240 2443 2560 2792 2912 3328 3490 3584 3640 4160 4480 4537 4886 5584 5824 6656 6980 7280 8320 8960 9074 9772 11168 11648 12215 13960 14560 16640 17920 18148 19544 22336 22685 23296 24430 27920 29120 31759 33280 36296 39088 44672 45370 46592 48860 55840 58240 63518 72592 78176 89344 90740 97720 111680 116480 127036 145184 156352 158795 178688 181480 195440 223360 232960 254072 290368 312704 317590 362960 390880 446720 508144 580736 625408 635180 725920 781760 893440 1016288 1161472 1250816 1270360 1451840 1563520 2032576 2322944 2540720 2903680 3127040 4065152 5081440 5807360 6254080 8130304 10162880 11614720 16260608 20325760 40651520 81303040
- Sum of all divisors σ(n): 240609600
- Sum of proper divisors (its aliquot sum) s(n): 159306560
- 81303040 is an abundant number, because the sum of its proper divisors (159306560) is greater than itself. Its abundance is 78003520
Bases of 81303040
- Binary: 1001101100010010110000000002
- Hexadecimal: 0x4D89600
- Base-36: 1CELTS
Squares and roots of 81303040
- 81303040 squared (813030402) is 6610184313241600
- 81303040 cubed (813030403) is 537428079626854334464000
-
The
square root of 81303040 is 9016.8198385019 -
The
cube root of 81303040 is 433.2137789845
Scales and comparisons
How big is 81303040?- 81,303,040 seconds is equal to 2 years, 30 weeks, 3 days, 10 minutes, 40 seconds.
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To count from 1 to 81,303,040 would take you about three 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 81303040 cubic inches would be around 36.1 feet tall.
Recreational maths with 81303040
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The information we have on file for 81303040 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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