20686518720

Names of 20686518720

• Cardinal: 20686518720 can be written as Twenty billion, six hundred eighty-six million, five hundred eighteen thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.068651872 × 10¹⁰

Factors of 20686518720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 114030

Divisors of 20686518720

• Number of divisors d(n): 280
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 27 28 30 32 35 36 40 42 45 48 54 56 60 63 64 70 72 80 81 84 90 96 105 108 112 120 126 135 140 144 160 162 168 180 189 192 210 216 224 240 252 270 280 288 315 320 324 336 360 378 405 420 432 448 480 504 540 560 567 576 630 648 672 720 756 810 840 864 945 960 1008 1080 1120 1134 1260 1296 1344 1440 1512 1620 1680 1728 1890 2016 2160 2240 2268 2520 2592 2835 2880 3024 3240 3360 3780 4032 4320 4536 5040 5184 5670 6048 6480 6720 7560 8640 9072 10080 11340 12096 12960 15120 18144 20160 22680 25920 30240 36288 45360 60480 90720 114013 181440 228026 342039 456052 570065 684078 798091 912104 1026117 1140130 1368156 1596182 1710195 1824208 2052234 2280260 2394273 2736312 3078351 3192364 3420390 3648416 3990455 4104468 4560520 4788546 5130585 5472624 6156702 6384728 6840780 7182819 7296832 7980910 8208936 9121040 9235053 9577092 10261170 10945248 11971365 12313404 12769456 13681560 14365638 15391755 15961820 16417872 18242080 18470106 19154184 20522340 21548457 21890496 23942730 24626808 25538912 27363120 28731276 30783510 31923640 32835744 35914095 36484160 36940212 38308368 41044680 43096914 46175265 47885460 49253616 51077824 54726240 57462552 61567020 63847280 64645371 65671488 71828190 73880424 76616736 82089360 86193828 92350530 95770920 98507232 107742285 109452480 114925104 123134040 127694560 129290742 143656380 147760848 153233472 164178720 172387656 184701060 191541840 197014464 215484570 229850208 246268080 255389120 258581484 287312760 295521696 323226855 328357440 344775312 369402120 383083680 430969140 459700416 492536160 517162968 574625520 591043392 646453710 689550624 738804240 766167360 861938280 985072320 1034325936 1149251040 1292907420 1379101248 1477608480 1723876560 2068651872 2298502080 2585814840 2955216960 3447753120 4137303744 5171629680 6895506240 10343259360 20686518720
• Sum of all divisors σ(n): 84098550624
• Sum of proper divisors (its aliquot sum) s(n): 63412031904
• 20686518720 is an abundant number, because the sum of its proper divisors (63412031904) is greater than itself. Its abundance is 42725513184

Bases of 20686518720

• Binary: 10011010001000000110011100111000000₂
• Hexadecimal: 0x4D10339C0
• Base-36: 9I47W00

Squares and roots of 20686518720

• 20686518720 squared (20686518720²) is 427932056752910438400
• 20686518720 cubed (20686518720³) is 8852424502907184198445006848000
• The square root of 20686518720 is 143828.0873821243
• The cube root of 20686518720 is 2745.1271821393

Scales and comparisons

• 20,686,518,720 seconds is equal to 657 years, 39 weeks, 6 days, 7 hours, 12 minutes.
• To count from 1 to 20,686,518,720 would take you about one thousand, three hundred fifteen 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 20686518720 cubic inches would be around 228.8 feet tall.

Recreational maths with 20686518720

• 20686518720 backwards is 02781568602
• 20686518720 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20686518720's digits is 45
• More coming soon!