20688940818

Names of 20688940818

• Cardinal: 20688940818 can be written as Twenty billion, six hundred eighty-eight million, nine hundred forty thousand, eight hundred eighteen.

Scientific notation

• Scientific notation: 2.0688940818 × 10¹⁰

Factors of 20688940818

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 4196

Divisors of 20688940818

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 6 7 9 13 14 18 19 21 23 26 38 39 42 46 49 57 63 69 78 91 98 114 117 126 133 138 147 161 171 182 207 234 247 266 273 294 299 322 342 399 414 437 441 483 494 546 598 637 741 798 819 874 882 897 931 966 1127 1197 1274 1311 1449 1482 1638 1729 1794 1862 1911 2093 2223 2254 2394 2622 2691 2793 2898 3059 3381 3458 3822 3933 4129 4186 4446 5187 5382 5586 5681 5733 6118 6279 6762 7866 8258 8379 9177 10143 10374 11362 11466 12103 12387 12558 14651 15561 16758 17043 18354 18837 20286 21413 24206 24774 27531 28903 29302 31122 34086 36309 37161 37674 39767 42826 43953 51129 53677 55062 57806 64239 72618 74322 78451 79534 86709 87906 94967 102258 107354 108927 119301 128478 131859 156902 161031 173418 189934 192717 202321 217854 235353 238602 260127 263718 278369 284901 322062 357903 375739 385434 404642 470706 483093 520254 549157 556738 569802 606963 664769 706059 715806 751478 835107 854703 966186 1019863 1098314 1127217 1213926 1234571 1329538 1412118 1647471 1670214 1709406 1804373 1820889 1994307 2039726 2254434 2469142 2505321 2630173 3059589 3294942 3381651 3608746 3641778 3703713 3844099 3988614 4653383 4942413 5010642 5260346 5413119 5982921 6119178 6763302 7139041 7407426 7688198 7890519 8641997 9178767 9306766 9884826 10826238 11111139 11532297 11965842 12630611 13960149 14278082 15781038 16239357 17283994 18357534 21417123 22222278 23064594 23456849 23671557 25261222 25925991 27920298 32478714 34596891 37891833 41880447 42834246 46913698 47343114 49973287 51851982 60493979 64251369 69193782 70370547 75783666 77777973 83760894 88414277 99946574 113675499 120987958 128502738 140741094 149919861 155555946 164197943 176828554 181481937 211111641 227350998 265242831 299839722 328395886 362963874 422223282 449759583 492593829 530485662 544445811 795728493 899519166 985187658 1088891622 1149385601 1477781487 1591456986 2298771202 2955562974 3448156803 6896313606 10344470409 20688940818
• Sum of all divisors σ(n): 61696252800
• Sum of proper divisors (its aliquot sum) s(n): 41007311982
• 20688940818 is an abundant number, because the sum of its proper divisors (41007311982) is greater than itself. Its abundance is 20318371164

Bases of 20688940818

• Binary: 10011010001001010000010111100010010₂
• Hexadecimal: 0x4D1282F12
• Base-36: 9I5NSWI

Squares and roots of 20688940818

• 20688940818 squared (20688940818²) is 428032272170706509124
• 20688940818 cubed (20688940818³) is 8855534347133815360513813023432
• The square root of 20688940818 is 143836.5072504195
• The cube root of 20688940818 is 2745.2343164467

Scales and comparisons

• 20,688,940,818 seconds is equal to 657 years, 43 weeks, 6 days, 8 hours, 18 seconds.
• To count from 1 to 20,688,940,818 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 20688940818 cubic inches would be around 228.8 feet tall.

Recreational maths with 20688940818

• 20688940818 backwards is 81804988602
• The number of decimal digits it has is: 11
• The sum of 20688940818's digits is 54
• More coming soon!