20389121445

Names of 20389121445

• Cardinal: 20389121445 can be written as Twenty billion, three hundred eighty-nine million, one hundred twenty-one thousand, four hundred forty-five.

Scientific notation

• Scientific notation: 2.0389121445 × 10¹⁰

Factors of 20389121445

• Number of distinct prime factors ω(n): 9
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 177

Divisors of 20389121445

• Number of divisors d(n): 512
• Complete list of divisors:
  1 3 5 7 11 15 17 19 21 31 33 35 41 43 51 55 57 77 85 93 95 105 119 123 129 133 155 165 187 205 209 215 217 231 255 285 287 301 323 341 357 385 399 451 465 473 527 561 589 595 615 627 645 651 665 697 731 779 817 861 903 935 969 1023 1045 1085 1155 1271 1309 1333 1353 1419 1435 1463 1505 1581 1615 1705 1763 1767 1785 1995 2091 2193 2255 2261 2337 2365 2387 2451 2635 2805 2945 3135 3157 3255 3311 3485 3553 3655 3689 3813 3895 3927 3999 4085 4123 4305 4389 4515 4845 4879 5115 5117 5289 5453 5719 5797 6355 6479 6545 6665 6765 6783 7095 7161 7315 7667 7905 8041 8569 8815 8835 8897 8987 9331 9471 9933 10013 10455 10659 10965 11067 11305 11685 11935 12255 12341 12369 13243 13889 13981 14637 14663 15351 15785 16359 16555 17157 17391 17765 18445 19065 19393 19437 19635 19995 20615 21607 21945 22661 23001 24123 24149 24395 24871 25327 25585 25707 26445 26691 26961 27265 27993 28595 28985 29971 30039 32395 33497 33915 35805 37023 38335 39729 40205 40579 41667 41943 42845 43989 44485 44935 45353 46655 47355 49665 50065 53295 53669 54653 55335 56287 58179 59983 61705 61845 62909 64821 66215 67983 69445 69905 70091 72447 73185 73315 74613 75981 76755 81795 85785 86955 89913 92701 96965 97185 97223 97867 100491 102641 108035 110143 113305 115005 120615 120745 121737 124355 126635 128535 133455 134805 135751 136059 139965 145673 149855 150195 151249 152779 158627 161007 163959 167485 168861 169043 177289 179949 185115 188727 198645 202895 208335 209715 209797 210273 219945 226765 234479 237677 249271 265639 268345 273265 278103 278597 281435 290895 291669 293601 299915 307923 314545 324105 329681 330429 339915 350455 362235 368467 373065 379905 382571 407253 410533 430559 437019 449565 453747 458337 463505 475881 486115 489335 502455 507129 513205 531867 550715 569449 601183 608685 629391 678755 680295 703437 713031 728365 747813 756245 763895 771001 793135 796917 805035 819795 835791 844305 845215 886445 899745 929101 943635 989043 1019711 1038407 1048985 1051365 1069453 1105401 1147713 1172395 1188385 1231599 1246355 1291677 1328195 1390515 1392985 1458345 1468005 1539615 1648405 1652145 1663739 1708347 1744897 1803549 1842335 1859473 1912855 1950179 2036265 2052665 2152795 2185095 2268735 2291685 2307767 2313003 2379405 2535645 2579269 2659335 2787303 2847245 2873731 3005915 3013913 3059133 3115221 3146955 3208359 3517185 3565155 3739065 3855005 3984585 3986143 4178955 4208281 4515863 4645505 4736149 4945215 4991217 5098555 5192035 5234691 5347265 5527005 5578419 5738565 5850537 6157995 6263939 6458385 6503707 6923301 7268849 7737807 8318695 8541735 8621193 8724485 9017745 9041739 9297365 9750895 10220111 11422477 11538835 11565015 11958429 12624843 12896345 13547589 13936515 14208447 14368655 15069565 15295665 15576105 16041795 17652919 18791817 19511121 19930715 21041405 21806547 22579315 23680745 24956085 26173455 27892095 29252685 30660333 31319695 31611041 32518535 33153043 34267431 34616505 36344245 38689035 43105965 43847573 45208695 51100555 52958757 57112385 59792145 63124215 67737945 71042235 71540777 79957339 88264595 93959085 94833123 97555605 99459129 109032735 123570433 131542719 153301665 158055205 165765215 171337155 194182109 214622331 219237865 239872017 264793785 357703885 370711299 399786695 474165615 497295645 582546327 617852165 657713595 970910545 1073111655 1199360085 1359274763 1853556495 2912731635 4077824289 6796373815 20389121445
• Sum of all divisors σ(n): 49049763840
• Sum of proper divisors (its aliquot sum) s(n): 28660642395
• 20389121445 is an abundant number, because the sum of its proper divisors (28660642395) is greater than itself. Its abundance is 8271520950

Bases of 20389121445

• Binary: 10010111111010010010100110110100101₂
• Hexadecimal: 0x4BF494DA5
• Base-36: 9D75MSL

Squares and roots of 20389121445

• 20389121445 squared (20389121445²) is 415716273298958888025
• 20389121445 cubed (20389121445³) is 8476089582955283560003881196125
• The square root of 20389121445 is 142790.4809327289
• The cube root of 20389121445 is 2731.9086352423

Scales and comparisons

• 20,389,121,445 seconds is equal to 648 years, 16 weeks, 1 day, 4 hours, 50 minutes, 45 seconds.
• To count from 1 to 20,389,121,445 would take you about one thousand, two hundred ninety-six 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 20389121445 cubic inches would be around 227.7 feet tall.

Recreational maths with 20389121445

• 20389121445 backwards is 54412198302
• The number of decimal digits it has is: 11
• The sum of 20389121445's digits is 39
• More coming soon!