21209736240

Names of 21209736240

• Cardinal: 21209736240 can be written as Twenty-one billion, two hundred nine million, seven hundred thirty-six thousand, two hundred forty.

Scientific notation

• Scientific notation: 2.120973624 × 10¹⁰

Factors of 21209736240

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 143

Divisors of 21209736240

• Number of divisors d(n): 1440
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 11 12 14 15 16 18 20 21 22 24 28 30 31 33 35 36 40 41 42 43 44 45 48 49 55 56 60 62 63 66 70 72 77 80 82 84 86 88 90 93 98 99 105 110 112 120 123 124 126 129 132 140 144 147 154 155 164 165 168 172 176 180 186 196 198 205 210 215 217 220 231 240 245 246 248 252 258 264 279 280 287 294 301 308 310 315 328 330 336 341 344 360 369 372 385 387 392 396 410 420 430 434 440 441 451 462 465 473 490 492 495 496 504 516 528 539 558 560 574 588 602 615 616 620 630 645 651 656 660 682 688 693 720 735 738 744 770 774 784 792 820 840 860 861 868 880 882 902 903 924 930 946 980 984 990 1008 1023 1032 1078 1085 1116 1148 1155 1176 1204 1230 1232 1240 1260 1271 1290 1302 1320 1333 1353 1364 1386 1395 1419 1435 1470 1476 1488 1505 1519 1540 1548 1584 1617 1640 1680 1705 1720 1722 1736 1763 1764 1804 1806 1845 1848 1860 1892 1935 1953 1960 1968 1980 2009 2046 2064 2107 2156 2170 2205 2232 2255 2296 2310 2352 2365 2387 2408 2460 2480 2520 2542 2580 2583 2604 2640 2666 2695 2706 2709 2728 2772 2790 2838 2870 2940 2952 3010 3038 3069 3080 3096 3157 3234 3255 3280 3311 3410 3440 3444 3465 3472 3526 3528 3608 3612 3690 3696 3720 3784 3813 3870 3906 3920 3960 3999 4018 4059 4092 4214 4257 4305 4312 4340 4410 4464 4510 4515 4557 4592 4620 4730 4774 4816 4851 4920 5040 5084 5115 5160 5166 5208 5289 5332 5390 5412 5418 5456 5544 5580 5676 5740 5880 5904 6020 6027 6076 6138 6160 6192 6314 6321 6355 6468 6510 6622 6665 6765 6820 6888 6930 7052 7056 7095 7161 7216 7224 7380 7440 7568 7595 7626 7740 7812 7920 7998 8036 8085 8118 8184 8428 8514 8610 8624 8680 8815 8820 8897 9020 9030 9114 9240 9331 9460 9471 9548 9702 9765 9840 9933 10045 10168 10230 10320 10332 10416 10535 10578 10664 10780 10824 10836 11088 11160 11352 11439 11480 11760 11935 11997 12040 12054 12152 12276 12341 12628 12642 12710 12915 12936 13020 13244 13330 13530 13545 13640 13671 13776 13860 13981 14104 14190 14322 14448 14663 14760 15190 15252 15345 15480 15624 15785 15867 15996 16072 16170 16236 16368 16555 16709 16856 17028 17220 17360 17630 17640 17794 18040 18060 18081 18228 18480 18662 18920 18942 18963 19065 19096 19393 19404 19530 19866 19995 20090 20295 20336 20460 20664 21070 21156 21285 21328 21483 21560 21648 21672 22099 22320 22704 22785 22878 22960 23177 23870 23994 24080 24108 24255 24304 24552 24682 25256 25284 25420 25830 25872 26040 26445 26488 26660 26691 27060 27090 27280 27342 27720 27962 27993 28208 28380 28413 28644 29326 29520 29799 30135 30380 30504 30690 30960 31248 31570 31605 31734 31992 32144 32340 32472 33110 33418 33712 34056 34440 35260 35280 35588 35805 36080 36120 36162 36456 37023 37324 37840 37884 37926 38130 38192 38786 38808 39060 39732 39990 40180 40590 40920 41328 41943 42140 42312 42570 42966 43120 43344 43989 44198 44485 45570 45756 46354 46655 47355 47740 47988 48216 48510 49104 49364 49665 50127 50512 50568 50840 51660 52080 52890 52976 53320 53382 54120 54180 54653 54684 55440 55924 55986 56760 56826 57195 57288 58179 58652 59598 59985 60270 60760 61008 61380 61705 62279 63140 63210 63468 63984 64680 64944 65317 66220 66297 66836 68112 68355 68880 69531 69905 70520 71176 71610 72240 72324 72912 73315 74046 74648 75768 75852 76260 77572 77616 78120 79335 79464 79980 80073 80360 81180 81840 83545 83886 83979 84280 84624 85140 85932 86387 87978 88396 88970 90405 91140 91512 92708 93310 94710 94815 95480 95976 96432 96965 97020 97867 98728 99330 100254 101136 101680 102641 103320 105780 106640 106764 107415 108240 108360 109306 109368 110495 111069 111848 111972 113520 113652 114390 114576 115885 116358 117304 119196 119970 120540 121520 122760 123410 124558 125829 126280 126420 126936 129360 130634 131967 132440 132594 133455 133672 135751 136710 139062 139810 139965 141040 142065 142352 143220 144648 146630 148092 148995 149296 150381 151536 151704 152520 155144 156240 158670 158928 159960 160146 160720 162360 163959 167090 167772 167958 168560 170280 171864 172774 174537 175956 176792 177940 180810 182280 183024 185115 185416 186620 186837 189420 189630 190960 191952 193930 194040 195734 195951 197456 198660 198891 200508 205282 206640 208593 209715 211560 213528 214830 216720 218612 218736 219945 220990 222138 223696 223944 227304 228780 231770 232716 234608 238392 239940 241080 245520 246820 249116 250635 251658 252560 252840 253872 259161 261268 263934 264880 265188 266910 267344 271502 273265 273420 278124 279620 279930 284130 286440 289296 290895 293260 293601 296184 297990 300762 303408 305040 307923 310288 311395 317340 319920 320292 324720 326585 327918 331485 334180 335544 335916 340560 343728 345548 347655 349074 351912 353584 355880 361620 364560 370230 370832 373240 373674 378840 379260 382571 387860 388080 391468 391902 397320 397782 400365 401016 407253 410564 417186 419430 419895 423120 427056 429660 431935 437224 439890 441980 444276 447888 454608 457560 463540 465432 476784 479880 482160 489335 491877 493640 498232 501270 503316 505680 513205 518322 522536 527868 530376 533820 543004 546530 546840 555345 556248 559240 559860 560511 568260 572880 581790 586520 587202 587853 592368 595980 601183 601524 615846 622790 629145 634680 640584 653170 655836 659835 662970 668360 671088 671832 678755 685069 691096 695310 698148 703824 711760 718487 723240 740460 746480 747348 751905 757680 758520 765142 775720 777483 782936 783804 794640 795564 800730 802032 814506 819795 821128 834372 838860 839790 859320 863870 872685 874448 879780 880803 883960 888552 915120 923769 927080 930864 934185 950257 959760 978670 979755 983754 987280 994455 996464 1002540 1006632 1026410 1036644 1042965 1045072 1055736 1060752 1067640 1086008 1093060 1093680 1110690 1112496 1118480 1119720 1121022 1136520 1147713 1163580 1173040 1174404 1175706 1191960 1202366 1203048 1221759 1231692 1245580 1258290 1269360 1281168 1295805 1306340 1311672 1319670 1325940 1336720 1343664 1357510 1370138 1382192 1390620 1396296 1436974 1446480 1468005 1480920 1494696 1503810 1517040 1530284 1539615 1551440 1554966 1565872 1567608 1591128 1601460 1629012 1639590 1642256 1668744 1677720 1679580 1718640 1727740 1745370 1759560 1761606 1767920 1777104 1803549 1847538 1854160 1868370 1900514 1912855 1957340 1959510 1967508 1988910 2005080 2013264 2036265 2052820 2055207 2073288 2085930 2111472 2135280 2155461 2172016 2186120 2221380 2239440 2242044 2273040 2295426 2327160 2348808 2351412 2383920 2404732 2406096 2443518 2459385 2463384 2491160 2516580 2591610 2612680 2623344 2639340 2651880 2677997 2715020 2740276 2781240 2792592 2802555 2850771 2873948 2936010 2939265 2961840 2989392 3005915 3007620 3060568 3079230 3109932 3135216 3182256 3202920 3258024 3279180 3337488 3355440 3359160 3425345 3443139 3455480 3490740 3519120 3523212 3592435 3607098 3695076 3736740 3801028 3825710 3887415 3914680 3919020 3935016 3977820 4010160 4072530 4105640 4110414 4146576 4171860 4208281 4310922 4372240 4404015 4442760 4484088 4590852 4618845 4654320 4697616 4702824 4751285 4809464 4887036 4918770 4926768 4982320 5033160 5183220 5225360 5278680 5303760 5355994 5410647 5430040 5480552 5562480 5605110 5701542 5738565 5747896 5872020 5878530 6011830 6015240 6108795 6121136 6158460 6165621 6219864 6405840 6466383 6516048 6558360 6718320 6850690 6886278 6910960 6981480 7046424 7184870 7214196 7390152 7473480 7602056 7651420 7774830 7829360 7838040 7870032 7955640 8033991 8145060 8211280 8220828 8343720 8416562 8552313 8621844 8808030 8885520 8968176 9017745 9181704 9237690 9405648 9502570 9618928 9774072 9837540 10066320 10276035 10366440 10557360 10711988 10777305 10821294 10860080 10961104 11210220 11403084 11477130 11495792 11744040 11757060 12023660 12030480 12217590 12316920 12331242 12439728 12624843 12932766 13116720 13389985 13701380 13772556 13962960 14092848 14253855 14369740 14428392 14780304 14946960 15204112 15302840 15549660 15676080 15911280 16067982 16290120 16441656 16687440 16833124 17104626 17215695 17243688 17616060 18035490 18363408 18475380 19005140 19548144 19675080 20552070 20732880 21041405 21423976 21554610 21642588 22420440 22806168 22954260 23488080 23514120 24047320 24101973 24435180 24633840 24662484 25249686 25865532 26779970 27053235 27402760 27545112 28507710 28739480 28856784 29457967 30605680 30828105 31099320 32135964 32331915 32580240 32883312 33666248 34209252 34431390 34487376 35232120 36070980 36950760 37874529 38010280 39350160 40169955 41104140 42082810 42761565 42847952 43109220 43285176 44840880 45612336 45908520 47028240 48094640 48203946 48870360 49324968 50499372 51731064 53559940 54106470 54805520 55090224 57015420 57478960 58915934 61656210 62198640 63124215 64271928 64663830 67332496 68418504 68862780 70464240 72141960 73901520 75749058 76020560 80339910 82208280 84165620 85523130 86218440 86570352 88373901 91817040 96407892 97740720 98649936 100998744 103462128 107119880 108212940 114030840 117831868 120509865 123312420 126248430 128543856 129327660 136837008 137725560 144283920 147289835 151498116 160679820 164416560 168331240 171046260 172436880 176747802 189372645 192815784 201997488 214239760 216425880 228061680 235663736 241019730 246624840 252496860 258655320 265121703 275451120 294579670 302996232 321359640 336662480 342092520 353495604 378745290 385631568 432851760 441869505 471327472 482039460 493249680 504993720 517310640 530243406 589159340 605992464 642719280 684185040 706991208 757490580 883739010 964078920 1009987440 1060486812 1178318680 1325608515 1413982416 1514981160 1767478020 1928157840 2120973624 2356637360 2651217030 3029962320 3534956040 4241947248 5302434060 7069912080 10604868120 21209736240
• Sum of all divisors σ(n): 97805740032
• Sum of proper divisors (its aliquot sum) s(n): 76596003792
• 21209736240 is an abundant number, because the sum of its proper divisors (76596003792) is greater than itself. Its abundance is 55386267552

Bases of 21209736240

• Binary: 10011110000001100101110010000110000₂
• Hexadecimal: 0x4F032E430
• Base-36: 9QRQ980

Squares and roots of 21209736240

• 21209736240 squared (21209736240²) is 449852911370369337600
• 21209736240 cubed (21209736240³) is 9541261596961630601879514624000
• The square root of 21209736240 is 145635.6283331795
• The cube root of 21209736240 is 2768.0786303913

Scales and comparisons

• 21,209,736,240 seconds is equal to 674 years, 21 weeks, 1 hour, 24 minutes.
• To count from 1 to 21,209,736,240 would take you about one thousand, three hundred forty-eight 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 21209736240 cubic inches would be around 230.7 feet tall.

Recreational maths with 21209736240

• 21209736240 backwards is 04263790212
• 21209736240 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21209736240's digits is 36
• More coming soon!