20389979808

Names of 20389979808

• Cardinal: 20389979808 can be written as Twenty billion, three hundred eighty-nine million, nine hundred seventy-nine thousand, eight hundred eight.

Scientific notation

• Scientific notation: 2.0389979808 × 10¹⁰

Factors of 20389979808

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 11745

Divisors of 20389979808

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 6 8 9 11 12 16 18 19 22 24 29 32 33 36 38 44 48 57 58 66 72 76 87 88 96 99 114 116 132 144 152 171 174 176 198 209 228 232 261 264 288 304 319 342 348 352 396 418 456 464 522 528 551 608 627 638 684 696 792 836 912 928 957 1044 1056 1102 1254 1276 1368 1392 1584 1653 1672 1824 1881 1914 2088 2204 2508 2552 2736 2784 2871 3168 3306 3344 3762 3828 4176 4408 4959 5016 5104 5472 5742 6061 6612 6688 7524 7656 8352 8816 9918 10032 10208 11484 11681 12122 13224 15048 15312 17632 18183 19836 20064 22968 23362 24244 26448 30096 30624 35043 36366 39672 45936 46724 48488 52896 54549 60192 70086 72732 79344 91872 93448 96976 105129 109098 128491 140172 145464 158688 186896 193952 210258 218196 221939 256982 280344 290928 338749 373792 385473 420516 436392 443878 513964 560688 581856 665817 677498 770946 841032 872784 887756 1016247 1027928 1121376 1156419 1331634 1354996 1541892 1682064 1745568 1775512 1997451 2032494 2055856 2312838 2441329 2663268 2709992 3048741 3083784 3364128 3551024 3726239 3994902 4064988 4111712 4625676 4882658 5326536 5419984 6097482 6167568 6436231 7102048 7323987 7452478 7989804 8129976 9251352 9765316 10653072 10839968 11178717 12194964 12335136 12872462 14647974 14904956 15979608 16259952 18502704 19308693 19530632 21306144 21971961 22357434 24389928 25744924 29295948 29809912 31959216 32519904 33536151 37005408 38617386 39061264 43943922 44714868 48779856 51489848 57926079 58591896 59619824 63918432 67072302 70798541 77234772 78122528 87887844 89429736 97559712 102979696 115852158 117183792 119239648 134144604 141597082 154469544 175775688 178859472 205959392 212395623 231704316 234367584 268289208 283194164 308939088 351551376 357718944 424791246 463408632 536578416 566388328 617878176 637186869 703102752 849582492 926817264 1073156832 1132776656 1274373738 1699164984 1853634528 2265553312 2548747476 3398329968 5097494952 6796659936 10194989904 20389979808
• Sum of all divisors σ(n): 68886417600
• Sum of proper divisors (its aliquot sum) s(n): 48496437792
• 20389979808 is an abundant number, because the sum of its proper divisors (48496437792) is greater than itself. Its abundance is 28106457984

Bases of 20389979808

• Binary: 10010111111010101100110011010100000₂
• Hexadecimal: 0x4BF5666A0
• Base-36: 9D7O140

Squares and roots of 20389979808

• 20389979808 squared (20389979808²) is 415751276570647716864
• 20389979808 cubed (20389979808³) is 8477160134425730432338261082112
• The square root of 20389979808 is 142793.4865741431
• The cube root of 20389979808 is 2731.9469716395

Scales and comparisons

• 20,389,979,808 seconds is equal to 648 years, 17 weeks, 4 days, 3 hours, 16 minutes, 48 seconds.
• To count from 1 to 20,389,979,808 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 20389979808 cubic inches would be around 227.7 feet tall.

Recreational maths with 20389979808

• 20389979808 backwards is 80897998302
• The number of decimal digits it has is: 11
• The sum of 20389979808's digits is 63
• More coming soon!