20749516515

Names of 20749516515

• Cardinal: 20749516515 can be written as Twenty billion, seven hundred forty-nine million, five hundred sixteen thousand, five hundred fifteen.

Scientific notation

• Scientific notation: 2.0749516515 × 10¹⁰

Factors of 20749516515

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 331

Divisors of 20749516515

• Number of divisors d(n): 288
• Complete list of divisors:
  1 3 5 7 9 13 15 17 21 35 39 45 51 63 65 85 89 91 105 117 119 153 195 197 221 255 267 273 289 315 357 445 455 585 591 595 623 663 765 801 819 867 985 1071 1105 1157 1335 1365 1379 1445 1513 1547 1773 1785 1869 1989 2023 2561 2601 2955 3115 3315 3349 3471 3757 4005 4095 4137 4335 4539 4641 5355 5607 5785 6069 6895 7565 7683 7735 8099 8865 9345 9945 10047 10115 10413 10591 11271 12411 12805 13005 13617 13923 16745 17355 17533 17927 18207 18785 19669 20685 22695 23049 23205 23443 24297 25721 26299 28035 30141 30345 31773 33813 38415 40495 43537 50235 52065 52599 52955 53781 56355 56933 59007 62055 68085 69615 70329 72891 77163 78897 87665 89635 91035 95319 98345 115245 117215 121485 122731 128605 130611 131495 137683 150705 157797 158865 161343 169065 170799 177021 180047 210987 217685 227929 231489 236691 262995 268905 284665 295035 298061 304759 334373 351645 364455 368193 385815 391833 394485 398531 413049 476595 512397 540141 613655 653055 683787 688415 740129 788985 806715 853995 885105 894183 900235 914277 1003119 1054935 1104579 1139645 1157445 1183455 1195593 1239147 1490305 1523795 1595503 1620423 1671865 1840965 1959165 1992655 2051361 2065245 2086427 2220387 2340611 2561985 2682549 2700705 2742831 3009357 3418935 3586779 3700645 3874793 4470915 4571385 4786509 5015595 5067037 5180903 5522895 5977965 6195735 6259281 6661161 7021833 7977515 8102115 10256805 10432135 11101935 11624379 11703055 13412745 13714155 14359527 15046785 15201111 15542709 17933895 18777843 19373965 21065499 23932545 25335185 25904515 27123551 31296405 33305805 34873137 35109165 35469259 45603333 46628127 58121895 65871481 71797635 76005555 77713545 81370653 93889215 105327495 106407777 135617755 174365685 177346295 197614443 228016665 233140635 244111959 319223331 329357405 406853265 461100367 532038885 592843329 988072215 1220559795 1383301101 1596116655 2305501835 2964216645 4149903303 6916505505 20749516515
• Sum of all divisors σ(n): 47792384640
• Sum of proper divisors (its aliquot sum) s(n): 27042868125
• 20749516515 is an abundant number, because the sum of its proper divisors (27042868125) is greater than itself. Its abundance is 6293351610

Bases of 20749516515

• Binary: 10011010100110001000111111011100011₂
• Hexadecimal: 0x4D4C47EE3
• Base-36: 9J5Q5ER

Squares and roots of 20749516515

• 20749516515 squared (20749516515²) is 430542435606257745225
• 20749516515 cubed (20749516515³) is 8933547378020369121892799890875
• The square root of 20749516515 is 144046.9246981691
• The cube root of 20749516515 is 2747.9109871659

Scales and comparisons

• 20,749,516,515 seconds is equal to 659 years, 40 weeks, 10 hours, 35 minutes, 15 seconds.
• To count from 1 to 20,749,516,515 would take you about one thousand, three hundred nineteen 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 20749516515 cubic inches would be around 229 feet tall.

Recreational maths with 20749516515

• 20749516515 backwards is 51561594702
• 20749516515 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20749516515's digits is 45
• More coming soon!