18128905878720

Names of 18128905878720

• Cardinal: 18128905878720 can be written as Eighteen trillion, one hundred twenty-eight billion, nine hundred five million, eight hundred seventy-eight thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.812890587872 × 10¹³

Factors of 18128905878720

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 12207078

Divisors of 18128905878720

• Number of divisors d(n): 448
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 13 14 15 16 17 20 21 24 26 28 30 32 34 35 39 40 42 48 51 52 56 60 64 65 68 70 78 80 84 85 91 96 102 104 105 112 119 120 130 136 140 156 160 168 170 182 192 195 204 208 210 221 224 238 240 255 260 272 273 280 312 320 336 340 357 364 390 408 416 420 442 448 455 476 480 510 520 544 546 560 595 624 663 672 680 714 728 780 816 832 840 884 910 952 960 1020 1040 1088 1092 1105 1120 1190 1248 1326 1344 1360 1365 1428 1456 1547 1560 1632 1680 1768 1785 1820 1904 2040 2080 2184 2210 2240 2380 2496 2652 2720 2730 2856 2912 3094 3120 3264 3315 3360 3536 3570 3640 3808 4080 4160 4368 4420 4641 4760 5304 5440 5460 5712 5824 6188 6240 6630 6720 7072 7140 7280 7616 7735 8160 8736 8840 9282 9520 10608 10920 11424 12376 12480 13260 14144 14280 14560 15470 16320 17472 17680 18564 19040 21216 21840 22848 23205 24752 26520 28560 29120 30940 35360 37128 38080 42432 43680 46410 49504 53040 57120 61880 70720 74256 87360 92820 99008 106080 114240 123760 148512 185640 212160 247520 297024 371280 495040 742560 1485120 12207031 24414062 36621093 48828124 61035155 73242186 85449217 97656248 122070310 146484372 158691403 170898434 183105465 195312496 207519527 244140620 256347651 292968744 317382806 341796868 366210930 390624992 415039054 427246085 476074209 488281240 512695302 585937488 622558581 634765612 683593736 732421860 781249984 793457015 830078108 854492170 952148418 976562480 1025390604 1037597635 1110839821 1171874976 1245117162 1269531224 1281738255 1367187472 1452636689 1464843720 1586914030 1660156216 1708984340 1904296836 1953124960 2050781208 2075195270 2221679642 2343749952 2380371045 2490234324 2539062448 2563476510 2697753851 2734374944 2905273378 2929687440 3112792905 3173828060 3320312432 3332519463 3417968680 3808593672 3906249920 4101562416 4150390540 4357910067 4443359284 4760742090 4980468648 5078124896 5126953020 5395507702 5468749888 5554199105 5810546756 5859374880 6225585810 6347656120 6640624864 6665038926 6835937360 7263183445 7617187344 8093261553 8203124832 8300781080 8715820134 8886718568 9521484180 9960937296 10156249792 10253906040 10791015404 11108398210 11621093512 11718749760 12451171620 12695312240 13281249728 13330077852 13488769255 13671874720 14526366890 15234374688 16186523106 16406249664 16601562160 16662597315 17431640268 17773437136 18884276957 19042968360 19921874592 20507812080 21582030808 21789550335 22216796420 23242187024 24902343240 25390624480 26660155704 26977538510 27343749440 29052733780 30468749376 32373046212 33203124320 33325194630 34863280536 35546874272 37768553914 38085936720 39843749184 40466307765 41015624160 43164061616 43579100670 44433592840 46484374048 49804686480 50781248960 53320311408 53955077020 56652830871 58105467560 64746092424 66406248640 66650389260 69726561072 71093748544 75537107828 76171873440 80932615530 82031248320 86328123232 87158201340 88867185680 92968748096 94421384785 99609372960 106640622816 107910154040 113305661742 116210935120 129492184848 133300778520 139453122144 151074215656 152343746880 161865231060 172656246464 174316402680 177734371360 188842769570 199218745920 213281245632 215820308080 226611323484 232421870240 258984369696 266601557040 278906244288 283264154355 302148431312 323730462120 348632805360 355468742720 377685539140 431640616160 453222646968 464843740480 517968739392 533203114080 566528308710 604296862624 647460924240 697265610720 755371078280 863281232320 906445293936 1066406228160 1133056617420 1208593725248 1294921848480 1394531221440 1510742156560 1812890587872 2266113234840 2589843696960 3021484313120 3625781175744 4532226469680 6042968626240 9064452939360 18128905878720
• Sum of all divisors σ(n): 75009379608576
• Sum of proper divisors (its aliquot sum) s(n): 56880473729856
• 18128905878720 is an abundant number, because the sum of its proper divisors (56880473729856) is greater than itself. Its abundance is 38751567851136

Bases of 18128905878720

• Binary: 100000111110011110110111111101011110011000000₂
• Hexadecimal: 0x107CF6FEBCC0
• Base-36: 6FCAYHHHC

Squares and roots of 18128905878720

• 18128905878720 squared (18128905878720²) is 328657228359488575348838400
• 18128905878720 cubed (18128905878720³) is 5958195959290153935134234144483278848000
• The square root of 18128905878720 is 4257805.2889628479
• The cube root of 18128905878720 is 26269.8261121897

Scales and comparisons

• 18,128,905,878,720 seconds is equal to 576,443 years, 6 weeks, 5 days, 12 hours, 32 minutes.
• To count from 1 to 18,128,905,878,720 would take you about one million, four hundred forty-one thousand, one hundred seven 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 18128905878720 cubic inches would be around 2189.2 feet tall.

Recreational maths with 18128905878720

• 18128905878720 backwards is 02787850982181
• The number of decimal digits it has is: 14
• The sum of 18128905878720's digits is 66
• More coming soon!