21491317680
21,491,317,680 is an even composite number composed of seven prime numbers multiplied together.
21491317680 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of seven hundred twenty divisors.
Prime factorization of 21491317680:
24 × 3 × 5 × 72 × 292 × 41 × 53
(2 × 2 × 2 × 2 × 3 × 5 × 7 × 7 × 29 × 29 × 41 × 53)See below for interesting mathematical facts about the number 21491317680 from the Numbermatics database.
Names of 21491317680
- Cardinal: 21491317680 can be written as Twenty-one billion, four hundred ninety-one million, three hundred seventeen thousand, six hundred eighty.
Scientific notation
- Scientific notation: 2.149131768 × 1010
Factors of 21491317680
Divisors of 21491317680
- Number of divisors d(n): 720
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Complete list of divisors:
1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 29 30 35 40 41 42 48 49 53 56 58 60 70 80 82 84 87 98 105 106 112 116 120 123 140 145 147 159 164 168 174 196 203 205 210 212 232 240 245 246 265 280 287 290 294 318 328 336 348 371 392 406 410 420 424 435 464 490 492 530 560 574 580 588 609 615 636 656 696 735 742 784 795 812 820 840 841 848 861 870 980 984 1015 1060 1113 1148 1160 1176 1189 1218 1230 1272 1392 1421 1435 1470 1484 1537 1590 1624 1640 1680 1682 1722 1740 1855 1960 1968 2009 2030 2120 2173 2226 2296 2320 2352 2378 2436 2460 2523 2544 2597 2842 2870 2940 2968 3045 3074 3180 3248 3280 3364 3444 3480 3567 3710 3920 4018 4060 4205 4240 4263 4305 4346 4452 4592 4611 4756 4872 4920 5046 5194 5565 5684 5740 5880 5887 5936 5945 6027 6090 6148 6360 6519 6728 6888 6960 7105 7134 7420 7685 7791 8036 8120 8323 8410 8526 8610 8692 8904 9222 9512 9744 9840 10045 10092 10388 10759 10865 11130 11368 11480 11760 11774 11890 12054 12180 12296 12615 12720 12985 13038 13456 13776 14210 14268 14840 15211 15370 15582 16072 16240 16646 16820 17052 17220 17384 17661 17808 17835 18444 19024 20090 20184 20776 21315 21518 21730 22260 22736 22960 23055 23548 23780 24108 24360 24592 24969 25230 25970 26076 28420 28536 29435 29680 30135 30422 30740 31164 32144 32277 32595 33292 33640 34104 34440 34481 34768 35322 35670 36888 38955 40180 40368 41209 41552 41615 42630 43036 43460 44520 44573 45633 46110 47096 47560 48216 48720 49938 50460 51940 52152 53795 56840 57072 58261 58870 60270 60844 61480 62328 63017 64554 65190 66584 67280 68208 68880 68962 70644 71340 73776 75313 76055 77910 80360 82418 83230 85260 86072 86920 88305 89040 89146 91266 92220 94192 95120 96432 99876 100920 103443 103880 104304 106477 107590 113680 116522 117740 120540 121688 122960 123627 124656 124845 126034 129108 130380 133168 133719 137924 141288 142680 150626 152110 155820 160720 161385 164836 166460 170520 172144 172405 173840 174783 176610 178292 182532 184440 189051 199752 201840 206045 206886 207760 212954 215180 222865 225939 228165 233044 235480 241080 241367 243376 247254 249690 252068 258216 260760 267438 275848 282576 285360 291305 301252 304220 311640 312011 315085 319431 322770 329672 332920 341040 344810 349566 353220 356584 365064 368880 376565 378102 399504 412090 413772 425908 430360 441119 445730 451878 456330 466088 470960 482160 482734 494508 499380 504136 516432 517215 521520 532385 534876 551696 582610 602504 608440 618135 623280 624022 630170 638862 645540 659344 665840 668595 689620 699132 706440 713168 724101 730128 753130 756204 824180 827544 851816 860720 873915 882238 891460 903756 912660 932176 936033 945255 965468 989016 998760 1008272 1034430 1064770 1069752 1129695 1165220 1205008 1206835 1216880 1236270 1248044 1260340 1277724 1291080 1323357 1337190 1379240 1398264 1412880 1448202 1506260 1512408 1560055 1597155 1648360 1655088 1689569 1703632 1747830 1764476 1782920 1807512 1825320 1827493 1872066 1890510 1930936 1978032 1997520 2068860 2129540 2139504 2184077 2205595 2259390 2330440 2413670 2472540 2496088 2520680 2555448 2582160 2646714 2674380 2758480 2796528 2896404 3012520 3024816 3087833 3120110 3194310 3296720 3379138 3495660 3528952 3565840 3615024 3620505 3650640 3654986 3744132 3781020 3861872 4137720 4259080 4368154 4411190 4518780 4660880 4680165 4827340 4945080 4992176 5041360 5068707 5110896 5293428 5348760 5482479 5792808 6025040 6175666 6240220 6388620 6552231 6616785 6758276 6991320 7057904 7241010 7309972 7488264 7562040 8275440 8447845 8518160 8736308 8822380 9037560 9137465 9263499 9360330 9654680 9890160 10137414 10586856 10697520 10920385 10964958 11585616 12351332 12480440 12777240 12792451 13104462 13233570 13516552 13982640 14482020 14619944 14976528 15124080 15439165 16895690 17472616 17644760 18075120 18274930 18526998 18720660 19309360 20274828 21173712 21840770 21929916 24702664 24960880 25343535 25554480 25584902 26208924 26467140 27033104 27412395 28964040 29239888 30878330 32761155 33791380 34945232 35289520 36549860 37053996 37441320 38377353 40549656 43681540 43859832 46317495 49405328 50687070 51169804 52417848 52934280 54824790 57928080 61756660 63962255 65522310 67582760 73099720 74107992 74882640 76754706 81099312 87363080 87719664 89547157 92634990 101374140 102339608 104835696 105868560 109649580 123513320 127924510 131044620 135165520 146199440 148215984 153509412 174726160 179094314 185269980 191886765 202748280 204679216 219299160 247026640 255849020 262089240 268641471 307018824 358188628 370539960 383773530 405496560 438598320 447735785 511698040 524178480 537282942 614037648 716377256 741079920 767547060 895471570 1023396080 1074565884 1343207355 1432754512 1535094120 1790943140 2149131768 2686414710 3070188240 3581886280 4298263536 5372829420 7163772560 10745658840 21491317680
- Sum of all divisors σ(n): 83773950624
- Sum of proper divisors (its aliquot sum) s(n): 62282632944
- 21491317680 is an abundant number, because the sum of its proper divisors (62282632944) is greater than itself. Its abundance is 40791315264
Bases of 21491317680
- Binary: 101000000001111101101111011101100002
- Hexadecimal: 0x500FB7BB0
- Base-36: 9VFDIUO
Squares and roots of 21491317680
- 21491317680 squared (214913176802) is 461876735622680582400
- 21491317680 cubed (214913176803) is 9926339654268401009525816832000
-
The
square root of 21491317680 is 146599.1735310945 -
The
cube root of 21491317680 is 2780.2745307963
Scales and comparisons
How big is 21491317680?- 21,491,317,680 seconds is equal to 683 years, 18 weeks, 4 days, 2 hours, 28 minutes.
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To count from 1 to 21,491,317,680 would take you about one thousand, three hundred sixty-six 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 21491317680 cubic inches would be around 231.7 feet tall.
Recreational maths with 21491317680
- 21491317680 backwards is 08671319412
- 21491317680 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21491317680's digits is 42
- More coming soon!
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The information we have on file for 21491317680 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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