21385209384

Names of 21385209384

• Cardinal: 21385209384 can be written as Twenty-one billion, three hundred eighty-five million, two hundred nine thousand, three hundred eighty-four.

Scientific notation

• Scientific notation: 2.1385209384 × 10¹⁰

Factors of 21385209384

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 169

Divisors of 21385209384

• Number of divisors d(n): 1024
• Complete list of divisors:
  1 2 3 4 6 7 8 9 11 12 14 18 19 21 22 24 27 28 31 33 36 37 38 42 44 54 56 57 59 62 63 66 72 74 76 77 84 88 93 99 108 111 114 118 124 126 132 133 148 152 154 168 171 177 186 189 198 209 216 217 222 228 231 236 248 252 259 264 266 279 296 297 308 333 341 342 354 372 378 396 399 407 413 418 434 444 456 462 472 504 513 518 531 532 558 589 594 616 627 649 651 666 682 684 693 703 708 744 756 777 792 798 814 826 836 837 868 888 924 999 1023 1026 1036 1062 1064 1116 1121 1147 1178 1188 1197 1221 1239 1254 1298 1302 1332 1364 1368 1386 1406 1416 1463 1512 1554 1593 1596 1628 1652 1672 1674 1736 1767 1829 1848 1881 1947 1953 1998 2046 2052 2072 2079 2109 2124 2183 2232 2242 2294 2331 2356 2376 2387 2394 2442 2478 2508 2596 2604 2664 2728 2772 2812 2849 2926 3069 3108 3186 3192 3256 3304 3348 3363 3441 3534 3591 3658 3663 3717 3762 3894 3906 3996 4092 4104 4123 4158 4218 4248 4366 4389 4484 4543 4588 4662 4712 4774 4788 4884 4921 4956 5016 5192 5208 5301 5487 5544 5624 5643 5698 5841 5852 5859 6138 6216 6327 6372 6479 6549 6696 6726 6882 6993 7068 7161 7182 7316 7326 7434 7524 7733 7788 7812 7847 7992 8029 8184 8246 8316 8436 8547 8732 8778 8968 9086 9176 9207 9324 9548 9576 9768 9842 9912 10089 10323 10602 10974 10989 11151 11286 11396 11682 11704 11718 12276 12331 12369 12617 12654 12744 12803 12958 13098 13167 13452 13629 13764 13986 14136 14322 14364 14632 14652 14763 14868 15048 15281 15466 15576 15624 15694 15903 16058 16461 16492 16632 16872 17094 17464 17523 17556 18172 18414 18648 18981 19096 19437 19647 19684 20119 20178 20646 21204 21483 21793 21948 21978 22302 22572 22792 23199 23364 23436 23541 24013 24087 24552 24662 24738 25234 25308 25606 25641 25916 26196 26334 26904 27258 27528 27972 28644 28728 29304 29526 29736 30267 30562 30932 30969 31388 31806 32116 32922 32984 34188 34751 35046 35112 36344 36828 36993 37107 37851 37962 38409 38874 39294 39368 39501 40238 40356 40887 41292 41477 42408 42966 43586 43896 43956 44289 44604 45144 45353 45843 46398 46728 46872 47082 48026 48174 49324 49383 49476 50468 50616 51212 51282 51832 52392 52668 54131 54516 55944 57288 58311 58941 59052 60357 60534 61124 61864 61938 62776 63612 64232 64449 65379 65844 67673 68376 69502 69597 70092 70623 72039 72261 73656 73986 74214 75702 75924 76818 76923 77748 78588 79002 80476 80712 81774 82584 82954 85932 86317 87172 87912 88319 88578 89208 90706 91686 92796 94164 96052 96348 98648 98766 98952 100936 102424 102564 104253 105336 108262 109032 110979 111321 113553 115227 116622 117882 118104 120714 121068 122248 122661 123876 124431 127224 128898 130758 131688 132867 135346 136059 137529 139004 139194 140184 140833 141246 144078 144522 147972 148428 151404 151848 152551 153636 153846 155496 157176 158004 160952 162393 163548 165908 168091 171864 172634 174344 174933 176638 177156 181071 181412 183372 185592 188328 192104 192696 196137 197532 203019 205128 208506 208791 211869 216117 216524 216783 221958 222642 227106 230454 233244 235764 239723 241428 242136 243257 245322 247752 248862 257796 258951 261516 264957 265734 270692 272118 275058 278008 278388 281666 282492 288156 289044 290339 295944 296856 302808 305102 307272 307692 312759 316008 324786 327096 331816 332937 336182 340659 345268 345681 349866 353276 354312 362142 362824 366744 373293 382261 392274 395064 406038 408177 412587 417012 417582 422499 423738 432234 433048 433566 443916 445284 454212 456247 457653 460908 466488 471528 473711 479446 482856 486514 487179 490644 497724 504273 515592 517902 523032 529914 531468 541384 543213 544236 550116 556776 563332 564984 576312 578088 580678 588411 609057 610204 615384 625518 648351 649572 665874 672364 681318 690536 691362 699732 706552 719169 724284 729771 744403 746586 764522 776853 784548 794871 812076 816354 825174 834024 835164 844998 847476 864468 867132 871017 887832 890568 908424 912494 915306 921816 938277 947422 958892 973028 974358 981288 995448 1008546 1035804 1059828 1062936 1086426 1088472 1100232 1119879 1126664 1146783 1161356 1176822 1218114 1220408 1224531 1251036 1267497 1285787 1296702 1299144 1331748 1344728 1362636 1368741 1372959 1382724 1399464 1421133 1438338 1448568 1459542 1461537 1488806 1493172 1512819 1529044 1553706 1569096 1589742 1624152 1632708 1650348 1670328 1678061 1689996 1694952 1728936 1734264 1742034 1824988 1827171 1830612 1876554 1894844 1917784 1946056 1948716 2017092 2071608 2119656 2157507 2172852 2189313 2233209 2239758 2293566 2322712 2330559 2353644 2384613 2436228 2449062 2502072 2534994 2571574 2593404 2613051 2663496 2675827 2725272 2737482 2745918 2765448 2842266 2876676 2919084 2923074 2977612 2986344 3025638 3058088 3107412 3179484 3193729 3265416 3300696 3356122 3379992 3440349 3484068 3649976 3654342 3661224 3753108 3789688 3802491 3857361 3897432 4034184 4106223 4118877 4263399 4315014 4345704 4378626 4466418 4479516 4538457 4587132 4661118 4707288 4769226 4872456 4898124 5034183 5069988 5143148 5186808 5210821 5226102 5351654 5474964 5491836 5684532 5753352 5838168 5846148 5955224 6051276 6214824 6358968 6387458 6472521 6567939 6699627 6712244 6880698 6968136 7308684 7506216 7604982 7714722 7839153 8027481 8212446 8237754 8526798 8630028 8757252 8932836 8959032 9000509 9076914 9174264 9322236 9538452 9581187 9796248 10068366 10139976 10286296 10321047 10421642 10452204 10703308 10949928 10983672 11369064 11572083 11692296 12102552 12318669 12774916 12790197 12945042 13135878 13399254 13424488 13761396 14143657 14617368 15102549 15209964 15429444 15632463 15678306 16054962 16424892 16475508 17053596 17260056 17514504 17865672 18001018 18153828 18644472 19076904 19162374 20098881 20136732 20642094 20843284 20904408 21406616 23144166 24082443 24637338 25549832 25580394 25890084 26271756 26798508 27001527 27522792 28287314 28743561 30205098 30419928 30858888 31264926 31356612 32109924 32849784 32951016 34107192 34716249 36002036 36307656 38324748 40197762 40273464 41284188 41686568 42430971 45307647 46288332 46897389 48164886 49274676 51160788 51780168 52543512 53597016 54003054 56574628 57487122 60410196 62529852 62713224 64219848 69432498 72004072 72247329 76649496 80395524 81004581 82568376 84861942 86230683 90615294 92576664 93794778 96329772 98549352 99005599 102321576 108006108 113149256 114974244 120820392 125059704 127292913 138864996 140692167 144494658 160791048 162009162 169723884 172461366 181230588 187589556 192659544 198011198 216012216 229948488 243013743 254585826 277729992 281384334 288989316 297016797 324018324 339447768 344922732 362461176 375179112 381878739 396022396 486027486 509171652 562768668 577978632 594033594 648036648 689845464 763757478 792044792 891050391 972054972 1018343304 1125537336 1188067188 1527514956 1782100782 1944109944 2376134376 2673151173 3055029912 3564201564 5346302346 7128403128 10692604692 21385209384
• Sum of all divisors σ(n): 84049920000
• Sum of proper divisors (its aliquot sum) s(n): 62664710616
• 21385209384 is an abundant number, because the sum of its proper divisors (62664710616) is greater than itself. Its abundance is 41279501232

Bases of 21385209384

• Binary: 10011111010101010000110011000101000₂
• Hexadecimal: 0x4FAA86628
• Base-36: 9TO7960

Squares and roots of 21385209384

• 21385209384 squared (21385209384²) is 457327180397521659456
• 21385209384 cubed (21385209384³) is 9780037509795341042141703535104
• The square root of 21385209384 is 146236.8263605307
• The cube root of 21385209384 is 2775.6913304585

Scales and comparisons

• 21,385,209,384 seconds is equal to 679 years, 51 weeks, 23 hours, 56 minutes, 24 seconds.
• To count from 1 to 21,385,209,384 would take you about one thousand, three hundred fifty-nine 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 21385209384 cubic inches would be around 231.3 feet tall.

Recreational maths with 21385209384

• 21385209384 backwards is 48390258312
• The number of decimal digits it has is: 11
• The sum of 21385209384's digits is 45
• More coming soon!