81304080
81,304,080 is an even composite number composed of seven prime numbers multiplied together.
81304080 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of three hundred twenty divisors.
Prime factorization of 81304080:
24 × 3 × 5 × 11 × 13 × 23 × 103
(2 × 2 × 2 × 2 × 3 × 5 × 11 × 13 × 23 × 103)See below for interesting mathematical facts about the number 81304080 from the Numbermatics database.
Names of 81304080
- Cardinal: 81304080 can be written as Eighty-one million, three hundred four thousand and eighty.
Scientific notation
- Scientific notation: 8.130408 × 107
Factors of 81304080
Divisors of 81304080
- Number of divisors d(n): 320
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Complete list of divisors:
1 2 3 4 5 6 8 10 11 12 13 15 16 20 22 23 24 26 30 33 39 40 44 46 48 52 55 60 65 66 69 78 80 88 92 103 104 110 115 120 130 132 138 143 156 165 176 184 195 206 208 220 230 240 253 260 264 276 286 299 309 312 330 345 368 390 412 429 440 460 506 515 520 528 552 572 598 618 624 660 690 715 759 780 824 858 880 897 920 1012 1030 1040 1104 1133 1144 1196 1236 1265 1320 1339 1380 1430 1495 1518 1545 1560 1648 1716 1794 1840 2024 2060 2145 2266 2288 2369 2392 2472 2530 2640 2678 2760 2860 2990 3036 3090 3120 3289 3399 3432 3588 3795 4017 4048 4120 4290 4485 4532 4738 4784 4944 5060 5356 5520 5665 5720 5980 6072 6180 6578 6695 6798 6864 7107 7176 7590 8034 8240 8580 8970 9064 9476 9867 10120 10712 11330 11440 11845 11960 12144 12360 13156 13390 13596 14214 14352 14729 15180 16068 16445 16995 17160 17940 18128 18952 19734 20085 20240 21424 22660 23690 23920 24720 26059 26312 26780 27192 28428 29458 30360 30797 32136 32890 33990 34320 35535 35880 37904 39468 40170 44187 45320 47380 49335 52118 52624 53560 54384 56856 58916 60720 61594 64272 65780 67980 71070 71760 73645 78177 78936 80340 88374 90640 92391 94760 98670 104236 107120 113712 117832 123188 130295 131560 135960 142140 147290 153985 156354 157872 160680 176748 184782 189520 197340 208472 220935 235664 246376 260590 263120 271920 284280 294580 307970 312708 321360 338767 353496 369564 390885 394680 416944 441870 461955 492752 521180 568560 589160 615940 625416 677534 706992 739128 781770 789360 883740 923910 1016301 1042360 1178320 1231880 1250832 1355068 1478256 1563540 1693835 1767480 1847820 2032602 2084720 2463760 2710136 3127080 3387670 3534960 3695640 4065204 5081505 5420272 6254160 6775340 7391280 8130408 10163010 13550680 16260816 20326020 27101360 40652040 81304080
- Sum of all divisors σ(n): 311980032
- Sum of proper divisors (its aliquot sum) s(n): 230675952
- 81304080 is an abundant number, because the sum of its proper divisors (230675952) is greater than itself. Its abundance is 149371872
Bases of 81304080
- Binary: 1001101100010011010000100002
- Hexadecimal: 0x4D89A10
- Base-36: 1CEMMO
Squares and roots of 81304080
- 81304080 squared (813040802) is 6610353424646400
- 81304080 cubed (813040803) is 537448703665724877312000
-
The
square root of 81304080 is 9016.8775083173 -
The
cube root of 81304080 is 433.2156261495
Scales and comparisons
How big is 81304080?- 81,304,080 seconds is equal to 2 years, 30 weeks, 3 days, 28 minutes.
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To count from 1 to 81,304,080 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 81304080 cubic inches would be around 36.1 feet tall.
Recreational maths with 81304080
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The information we have on file for 81304080 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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