20018718720

Names of 20018718720

• Cardinal: 20018718720 can be written as Twenty billion, eighteen million, seven hundred eighteen thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.001871872 × 10¹⁰

Factors of 20018718720

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 19
• Sum of prime factors: 72

Divisors of 20018718720

• Number of divisors d(n): 1728
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 18 20 21 22 24 26 28 30 31 32 33 35 36 39 40 42 44 45 48 49 52 55 56 60 62 63 64 65 66 70 72 77 78 80 84 88 90 91 93 96 98 99 104 105 110 112 117 120 124 126 128 130 132 140 143 144 147 154 155 156 160 165 168 176 180 182 186 192 195 196 198 208 210 217 220 224 231 234 240 245 248 252 256 260 264 273 279 280 286 288 294 308 310 312 315 320 330 336 341 352 360 364 372 384 385 390 392 396 403 416 420 429 434 440 441 448 455 462 465 468 480 490 495 496 504 512 520 528 539 546 558 560 572 576 585 588 616 620 624 630 637 640 651 660 672 682 693 704 715 720 728 735 744 768 770 780 784 792 806 819 832 840 858 868 880 882 896 910 924 930 936 960 980 990 992 1001 1008 1023 1024 1040 1056 1078 1085 1092 1116 1120 1144 1152 1155 1170 1176 1209 1232 1240 1248 1260 1274 1280 1287 1302 1320 1344 1364 1365 1386 1395 1408 1430 1440 1456 1470 1488 1519 1536 1540 1560 1568 1584 1612 1617 1638 1664 1680 1705 1716 1736 1760 1764 1792 1820 1848 1860 1872 1911 1920 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31775744 32081280 32288256 32497920 34045440 34220032 34754720 34997760 35747712 35875840 36664320 37140480 37914240 38497536 39099060 39719680 40360320 40441856 40854528 41705664 42775040 43051008 43330560 43997184 44684640 45393920 45497088 46126080 46663680 47663616 48121920 49674240 50552320 51068160 51330048 51996672 52132080 53813760 54996480 55607552 56871360 58705920 59579520 60662784 62558496 63551488 64162560 64576512 64995840 68090880 69509440 69995520 71495424 71751680 73328640 75828480 76995072 78198120 79439360 80720640 81709056 83411328 85550080 86661120 89369280 90994176 92252160 95327232 96243840 101104640 102136320 102660096 104264160 107627520 109992960 111215104 113742720 119159040 121325568 125116992 128325120 129153024 129991680 136181760 139018880 139991040 142990848 151656960 153990144 156396240 158878720 161441280 166822656 171100160 178738560 181988352 190654464 192487680 202209280 204272640 208528320 215255040 219985920 222430208 227485440 238318080 250233984 256650240 259983360 278037760 285981696 303313920 307980288 312792480 317757440 322882560 333645312 357477120 363976704 384975360 408545280 417056640 444860416 454970880 476636160 500467968 513300480 556075520 571963392 606627840 625584960 645765120 667290624 714954240 769950720 834113280 909941760 953272320 1000935936 1112151040 1251169920 1334581248 1429908480 1539901440 1668226560 1819883520 2001871872 2224302080 2502339840 2859816960 3336453120 4003743744 5004679680 6672906240 10009359360 20018718720
• Sum of all divisors σ(n): 97877445120
• Sum of proper divisors (its aliquot sum) s(n): 77858726400
• 20018718720 is an abundant number, because the sum of its proper divisors (77858726400) is greater than itself. Its abundance is 57840007680

Bases of 20018718720

• Binary: 10010101001001101010110100000000000₂
• Hexadecimal: 0x4A9356800
• Base-36: 972MM80

Squares and roots of 20018718720

• 20018718720 squared (20018718720²) is 400749099190478438400
• 20018718720 cubed (20018718720³) is 8022483493987567560554446848000
• The square root of 20018718720 is 141487.5214285699
• The cube root of 20018718720 is 2715.2641929249

Scales and comparisons

• 20,018,718,720 seconds is equal to 636 years, 27 weeks, 5 days, 3 hours, 12 minutes.
• To count from 1 to 20,018,718,720 would take you about one thousand, two hundred seventy-three 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 20018718720 cubic inches would be around 226.3 feet tall.

Recreational maths with 20018718720

• 20018718720 backwards is 02781781002
• 20018718720 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20018718720's digits is 36
• More coming soon!