20720903440

Names of 20720903440

• Cardinal: 20720903440 can be written as Twenty billion, seven hundred twenty million, nine hundred three thousand, four hundred forty.

Scientific notation

• Scientific notation: 2.072090344 × 10¹⁰

Factors of 20720903440

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 65954

Divisors of 20720903440

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 5 8 10 16 20 31 40 62 80 124 127 155 248 254 310 496 508 620 635 1016 1240 1270 2032 2480 2540 3937 5080 7874 10160 15748 19685 31496 39370 62992 65789 78740 131578 157480 263156 314960 328945 526312 657890 1052624 1315780 2039459 2631560 4078918 5263120 8157836 8355203 10197295 16315672 16710406 20394590 32631344 33420812 40789180 41776015 66841624 81578360 83552030 133683248 163156720 167104060 259011293 334208120 518022586 668416240 1036045172 1295056465 2072090344 2590112930 4144180688 5180225860 10360451720 20720903440
• Sum of all divisors σ(n): 50122506240
• Sum of proper divisors (its aliquot sum) s(n): 29401602800
• 20720903440 is an abundant number, because the sum of its proper divisors (29401602800) is greater than itself. Its abundance is 8680699360

Bases of 20720903440

• Binary: 10011010011000011111110010100010000₂
• Hexadecimal: 0x4D30FE510
• Base-36: 9IOOVF4

Squares and roots of 20720903440

• 20720903440 squared (20720903440²) is 429355839369803833600
• 20720903440 cubed (20720903440³) is 8896640888981855687767427584000
• The square root of 20720903440 is 143947.5718447519
• The cube root of 20720903440 is 2746.6473054793

Scales and comparisons

• 20,720,903,440 seconds is equal to 658 years, 44 weeks, 5 days, 6 hours, 30 minutes, 40 seconds.
• To count from 1 to 20,720,903,440 would take you about one thousand, three hundred seventeen 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 20720903440 cubic inches would be around 228.9 feet tall.

Recreational maths with 20720903440

• 20720903440 backwards is 04430902702
• 20720903440 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20720903440's digits is 31
• More coming soon!