81348960
81,348,960 is an even composite number composed of seven prime numbers multiplied together.
81348960 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of three hundred eighty-four divisors.
Prime factorization of 81348960:
25 × 3 × 5 × 7 × 11 × 31 × 71
(2 × 2 × 2 × 2 × 2 × 3 × 5 × 7 × 11 × 31 × 71)See below for interesting mathematical facts about the number 81348960 from the Numbermatics database.
Names of 81348960
- Cardinal: 81348960 can be written as Eighty-one million, three hundred forty-eight thousand, nine hundred sixty.
Scientific notation
- Scientific notation: 8.134896 × 107
Factors of 81348960
Divisors of 81348960
- Number of divisors d(n): 384
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Complete list of divisors:
1 2 3 4 5 6 7 8 10 11 12 14 15 16 20 21 22 24 28 30 31 32 33 35 40 42 44 48 55 56 60 62 66 70 71 77 80 84 88 93 96 105 110 112 120 124 132 140 142 154 155 160 165 168 176 186 210 213 217 220 224 231 240 248 264 280 284 308 310 330 336 341 352 355 372 385 420 426 434 440 462 465 480 496 497 528 560 568 616 620 651 660 672 682 710 744 770 781 840 852 868 880 924 930 992 994 1023 1056 1065 1085 1120 1136 1155 1232 1240 1302 1320 1364 1420 1488 1491 1540 1562 1680 1704 1705 1736 1760 1848 1860 1988 2046 2130 2170 2201 2272 2310 2343 2387 2464 2480 2485 2604 2640 2728 2840 2976 2982 3080 3124 3255 3360 3408 3410 3472 3696 3720 3905 3976 4092 4260 4340 4402 4620 4686 4774 4960 4970 5115 5208 5280 5456 5467 5680 5964 6160 6248 6510 6603 6816 6820 6944 7161 7392 7440 7455 7810 7952 8184 8520 8680 8804 9240 9372 9548 9940 10230 10416 10912 10934 11005 11360 11715 11928 11935 12320 12496 13020 13206 13640 14322 14880 14910 15407 15620 15904 16368 16401 17040 17360 17608 18480 18744 19096 19880 20460 20832 21868 22010 23430 23856 23870 24211 24992 26040 26412 27280 27335 28644 29820 30814 31240 32736 32802 33015 34080 34720 35216 35805 36960 37488 38192 39760 40920 43736 44020 46221 46860 47712 47740 48422 52080 52824 54560 54670 57288 59640 61628 62480 65604 66030 70432 71610 72633 74976 76384 77035 79520 81840 82005 87472 88040 92442 93720 95480 96844 104160 105648 109340 114576 119280 121055 123256 124960 131208 132060 143220 145266 154070 163680 164010 169477 174944 176080 184884 187440 190960 193688 211296 218680 229152 231105 238560 242110 246512 262416 264120 286440 290532 308140 328020 338954 352160 363165 369768 374880 381920 387376 437360 462210 484220 493024 508431 524832 528240 572880 581064 616280 656040 677908 726330 739536 774752 847385 874720 924420 968440 1016862 1056480 1145760 1162128 1232560 1312080 1355816 1452660 1479072 1694770 1848840 1936880 2033724 2324256 2465120 2542155 2624160 2711632 2905320 3389540 3697680 3873760 4067448 5084310 5423264 5810640 6779080 7395360 8134896 10168620 11621280 13558160 16269792 20337240 27116320 40674480 81348960
- Sum of all divisors σ(n): 334430208
- Sum of proper divisors (its aliquot sum) s(n): 253081248
- 81348960 is an abundant number, because the sum of its proper divisors (253081248) is greater than itself. Its abundance is 171732288
Bases of 81348960
- Binary: 1001101100101001001011000002
- Hexadecimal: 0x4D94960
- Base-36: 1CFL9C
Squares and roots of 81348960
- 81348960 squared (813489602) is 6617653293081600
- 81348960 cubed (813489603) is 538339213032763355136000
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The
square root of 81348960 is 9019.3658313653 -
The
cube root of 81348960 is 433.2953234247
Scales and comparisons
How big is 81348960?- 81,348,960 seconds is equal to 2 years, 30 weeks, 3 days, 12 hours, 56 minutes.
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To count from 1 to 81,348,960 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 81348960 cubic inches would be around 36.1 feet tall.
Recreational maths with 81348960
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