20917923840

Names of 20917923840

• Cardinal: 20917923840 can be written as Twenty billion, nine hundred seventeen million, nine hundred twenty-three thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.091792384 × 10¹⁰

Factors of 20917923840

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 19
• Sum of prime factors: 221

Divisors of 20917923840

• Number of divisors d(n): 832
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 11 12 15 16 18 19 20 22 24 27 30 32 33 36 38 40 44 45 48 54 55 57 60 64 66 72 76 80 88 90 95 96 99 108 110 114 120 128 132 135 144 152 160 165 171 176 180 181 190 192 198 209 216 220 228 240 256 264 270 285 288 297 304 320 330 342 352 360 362 380 384 396 418 432 440 456 480 495 512 513 528 540 543 570 576 594 608 627 640 660 684 704 720 724 760 768 792 836 855 864 880 905 912 960 990 1024 1026 1045 1056 1080 1086 1140 1152 1188 1216 1254 1280 1320 1368 1408 1440 1448 1485 1520 1536 1584 1629 1672 1710 1728 1760 1810 1824 1881 1920 1980 1991 2048 2052 2090 2112 2160 2172 2280 2304 2376 2432 2508 2560 2565 2640 2715 2736 2816 2880 2896 2970 3040 3072 3135 3168 3258 3344 3420 3439 3456 3520 3620 3648 3762 3840 3960 3982 4096 4104 4180 4224 4320 4344 4560 4608 4752 4864 4887 5016 5120 5130 5280 5430 5472 5632 5643 5760 5792 5940 5973 6080 6144 6270 6336 6516 6688 6840 6878 6912 7040 7240 7296 7524 7680 7920 7964 8145 8208 8360 8448 8640 8688 9120 9216 9405 9504 9728 9774 9955 10032 10240 10260 10317 10560 10860 10944 11264 11286 11520 11584 11880 11946 12160 12288 12540 12672 13032 13376 13680 13756 13824 14080 14480 14592 15048 15360 15840 15928 16290 16416 16720 16896 17195 17280 17376 17919 18240 18432 18810 19008 19456 19548 19910 20064 20480 20520 20634 21120 21720 21888 22528 22572 23040 23168 23760 23892 24320 24435 25080 25344 26064 26752 27360 27512 27648 28160 28215 28960 29184 29865 30096 30720 30951 31680 31856 32580 32832 33440 33792 34390 34560 34752 35838 36480 36864 37620 37829 38016 38912 39096 39820 40128 41040 41268 42240 43440 43776 45056 45144 46080 46336 47520 47784 48640 48870 50160 50688 51585 52128 53504 53757 54720 55024 55296 56320 56430 57920 58368 59730 60192 61440 61902 63360 63712 65160 65664 66880 67584 68780 69120 69504 71676 72960 75240 75658 76032 77824 78192 79640 80256 82080 82536 84480 86880 87552 89595 90288 92160 92672 92853 95040 95568 97280 97740 100320 101376 103170 104256 107008 107514 109440 110048 110592 112640 112860 113487 115840 116736 119460 120384 123804 126720 127424 130320 131328 133760 135168 137560 138240 139008 143352 145920 150480 151316 152064 154755 156384 159280 160512 164160 165072 168960 173760 175104 179190 180576 184320 185344 185706 189145 190080 191136 194560 195480 200640 202752 206340 208512 214016 215028 218880 220096 225280 225720 226974 231680 233472 238920 240768 247608 253440 254848 260640 262656 267520 268785 275120 276480 278016 286704 291840 300960 302632 304128 309510 312768 318560 321024 328320 330144 337920 340461 347520 350208 358380 361152 370688 371412 378290 380160 382272 389120 390960 401280 405504 412680 417024 428032 430056 437760 440192 451440 453948 463360 464265 477840 481536 495216 506880 509696 521280 525312 535040 537570 550240 552960 556032 567435 573408 583680 601920 605264 608256 619020 625536 637120 642048 656640 660288 675840 680922 695040 700416 716760 722304 741376 742824 756580 760320 764544 781920 802560 825360 834048 856064 860112 875520 880384 902880 907896 926720 928530 955680 963072 990432 1013760 1019392 1021383 1042560 1050624 1070080 1075140 1100480 1112064 1134870 1146816 1167360 1203840 1210528 1216512 1238040 1251072 1274240 1284096 1313280 1320576 1361844 1390080 1433520 1444608 1485648 1513160 1520640 1529088 1563840 1605120 1650720 1668096 1702305 1720224 1751040 1760768 1805760 1815792 1853440 1857060 1911360 1926144 1980864 2027520 2038784 2042766 2085120 2101248 2140160 2150280 2200960 2224128 2269740 2293632 2407680 2421056 2476080 2502144 2548480 2568192 2626560 2641152 2723688 2780160 2867040 2889216 2971296 3026320 3041280 3058176 3127680 3210240 3301440 3336192 3404610 3440448 3502080 3521536 3611520 3631584 3706880 3714120 3822720 3852288 3961728 4077568 4085532 4170240 4280320 4300560 4401920 4539480 4587264 4815360 4842112 4952160 5004288 5096960 5106915 5253120 5282304 5447376 5560320 5734080 5778432 5942592 6052640 6082560 6116352 6255360 6420480 6602880 6672384 6809220 6880896 7043072 7223040 7263168 7428240 7645440 7704576 7923456 8155136 8171064 8340480 8601120 8803840 9078960 9174528 9630720 9684224 9904320 10008576 10193920 10213830 10506240 10564608 10894752 11120640 11468160 11556864 11885184 12105280 12232704 12510720 12840960 13205760 13618440 13761792 14086144 14446080 14526336 14856480 15290880 15846912 16342128 16680960 17202240 17607680 18157920 18349056 19261440 19368448 19808640 20017152 20387840 20427660 21129216 21789504 22936320 23113728 23770368 24210560 24465408 25021440 26411520 27236880 27523584 28892160 29052672 29712960 30581760 31693824 32684256 33361920 34404480 35215360 36315840 36698112 38522880 38736896 39617280 40775680 40855320 42258432 43579008 45872640 47540736 48421120 50042880 52823040 54473760 55047168 57784320 58105344 59425920 61163520 63387648 65368512 68808960 70430720 72631680 73396224 77473792 79234560 81710640 87158016 91745280 95081472 96842240 100085760 105646080 108947520 110094336 115568640 116210688 118851840 122327040 126775296 130737024 137617920 145263360 154947584 158469120 163421280 174316032 183490560 190162944 193684480 211292160 217895040 220188672 232421376 237703680 261474048 275235840 290526720 316938240 326842560 348632064 366981120 380325888 387368960 435790080 464842752 475407360 522948096 550471680 581053440 633876480 653685120 697264128 774737920 871580160 950814720 1045896192 1100943360 1162106880 1307370240 1394528256 1743160320 1901629440 2091792384 2324213760 2614740480 3486320640 4183584768 5229480960 6972641280 10458961920 20917923840
• Sum of all divisors σ(n): 85867891200
• Sum of proper divisors (its aliquot sum) s(n): 64949967360
• 20917923840 is an abundant number, because the sum of its proper divisors (64949967360) is greater than itself. Its abundance is 44032043520

Bases of 20917923840

• Binary: 10011011110110011100011000000000000₂
• Hexadecimal: 0x4DECE3000
• Base-36: 9LXZPC0

Squares and roots of 20917923840

• 20917923840 squared (20917923840²) is 437559537776040345600
• 20917923840 cubed (20917923840³) is 9152837086664814926028079104000
• The square root of 20917923840 is 144630.3005597375
• The cube root of 20917923840 is 2755.3251676191

Scales and comparisons

• 20,917,923,840 seconds is equal to 665 years, 6 weeks, 3 days, 14 hours, 24 minutes.
• To count from 1 to 20,917,923,840 would take you about one thousand, three hundred thirty 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 20917923840 cubic inches would be around 229.6 feet tall.

Recreational maths with 20917923840

• 20917923840 backwards is 04832971902
• 20917923840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20917923840's digits is 45
• More coming soon!