21428584540

Names of 21428584540

• Cardinal: 21428584540 can be written as Twenty-one billion, four hundred twenty-eight million, five hundred eighty-four thousand, five hundred forty.

Scientific notation

• Scientific notation: 2.142858454 × 10¹⁰

Factors of 21428584540

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 835

Divisors of 21428584540

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 5 10 11 20 22 44 55 67 110 121 134 220 242 268 283 335 467 484 566 605 670 737 934 1132 1210 1340 1415 1474 1868 2335 2420 2830 2948 3113 3685 4670 5137 5660 6226 7370 8107 9340 10274 12452 14740 15565 16214 18961 20548 25685 31130 31289 32428 34243 37922 40535 51370 56507 62260 62578 68486 75844 81070 94805 102740 113014 125156 132161 136972 156445 162140 171215 189610 208571 226028 264322 282535 312890 342430 344179 379220 417142 528644 565070 625780 660805 684860 688358 834284 1042855 1130140 1321610 1376716 1453771 1720895 2085710 2294281 2643220 2907542 3441790 3785969 4171420 4588562 5815084 6883580 7268855 7571938 8854787 9177124 11471405 14537710 15143876 15991481 17709574 18929845 22942810 29075420 31982962 35419148 37859690 44273935 45885620 63965924 75719380 79957405 88547870 97402657 159914810 177095740 194805314 319829620 389610628 487013285 974026570 1071429227 1948053140 2142858454 4285716908 5357146135 10714292270 21428584540
• Sum of all divisors σ(n): 50486357376
• Sum of proper divisors (its aliquot sum) s(n): 29057772836
• 21428584540 is an abundant number, because the sum of its proper divisors (29057772836) is greater than itself. Its abundance is 7629188296

Bases of 21428584540

• Binary: 10011111101001111100100000001011100₂
• Hexadecimal: 0x4FD3E405C
• Base-36: 9UE0XNG

Squares and roots of 21428584540

• 21428584540 squared (21428584540²) is 459184235387927011600
• 21428584540 cubed (21428584540³) is 9839668207445453663420160664000
• The square root of 21428584540 is 146385.0557263277
• The cube root of 21428584540 is 2777.5666879391

Scales and comparisons

• 21,428,584,540 seconds is equal to 681 years, 18 weeks, 6 days, 35 minutes, 40 seconds.
• To count from 1 to 21,428,584,540 would take you about one thousand, three hundred sixty-two 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 21428584540 cubic inches would be around 231.5 feet tall.

Recreational maths with 21428584540

• 21428584540 backwards is 04548582412
• The number of decimal digits it has is: 11
• The sum of 21428584540's digits is 43
• More coming soon!