20390481864

Names of 20390481864

• Cardinal: 20390481864 can be written as Twenty billion, three hundred ninety million, four hundred eighty-one thousand, eight hundred sixty-four.

Scientific notation

• Scientific notation: 2.0390481864 × 10¹⁰

Factors of 20390481864

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 767

Divisors of 20390481864

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 8 9 12 18 19 24 27 36 38 54 57 72 76 81 108 114 152 162 171 216 228 243 324 342 456 486 513 648 684 743 972 1026 1368 1486 1539 1944 2052 2229 2972 3078 4104 4458 4617 5944 6156 6687 8916 9234 12312 13374 14117 17832 18468 20061 26748 28234 36936 40122 42351 53496 56468 60183 80244 84702 112936 120366 127053 160488 169404 180549 240732 254106 338808 361098 381159 481464 508212 552049 722196 762318 1016424 1104098 1143477 1444392 1524636 1656147 2208196 2286954 3049272 3312294 3430431 4416392 4573908 4968441 6624588 6860862 9147816 9936882 10488931 13249176 13721724 14905323 19873764 20977862 27443448 29810646 31466793 39747528 41955724 44715969 59621292 62933586 83911448 89431938 94400379 119242584 125867172 134147907 178863876 188800758 251734344 268295814 283201137 357727752 377601516 536591628 566402274 755203032 849603411 1073183256 1132804548 1699206822 2265609096 2548810233 3398413644 5097620466 6796827288 10195240932 20390481864
• Sum of all divisors σ(n): 60364995600
• Sum of proper divisors (its aliquot sum) s(n): 39974513736
• 20390481864 is an abundant number, because the sum of its proper divisors (39974513736) is greater than itself. Its abundance is 19584031872

Bases of 20390481864

• Binary: 10010111111010111100000111111001000₂
• Hexadecimal: 0x4BF5E0FC8
• Base-36: 9D7YSI0

Squares and roots of 20390481864

• 20390481864 squared (20390481864²) is 415771750646112914496
• 20390481864 cubed (20390481864³) is 8477786341113095665126870700544
• The square root of 20390481864 is 142795.2445426667
• The cube root of 20390481864 is 2731.9693940765

Scales and comparisons

• 20,390,481,864 seconds is equal to 648 years, 18 weeks, 2 days, 22 hours, 44 minutes, 24 seconds.
• To count from 1 to 20,390,481,864 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 20390481864 cubic inches would be around 227.7 feet tall.

Recreational maths with 20390481864

• 20390481864 backwards is 46818409302
• The number of decimal digits it has is: 11
• The sum of 20390481864's digits is 45
• More coming soon!