20816728240

Names of 20816728240

• Cardinal: 20816728240 can be written as Twenty billion, eight hundred sixteen million, seven hundred twenty-eight thousand, two hundred forty.

Scientific notation

• Scientific notation: 2.081672824 × 10¹⁰

Factors of 20816728240

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 55485

Divisors of 20816728240

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 4 5 7 8 10 11 14 16 20 22 28 35 40 44 55 56 61 70 77 80 88 110 112 122 140 154 176 220 244 280 305 308 385 427 440 488 560 610 616 671 770 854 880 976 1220 1232 1342 1540 1708 2135 2440 2684 3080 3355 3416 4270 4697 4880 5368 6160 6710 6832 8540 9394 10736 13420 17080 18788 23485 26840 34160 37576 46970 53680 55399 75152 93940 110798 187880 221596 276995 375760 387793 443192 553990 609389 775586 886384 1107980 1218778 1551172 1938965 2215960 2437556 3046945 3102344 3379339 3877930 4265723 4431920 4875112 6093890 6204688 6758678 7755860 8531446 9750224 12187780 13517356 15511720 16896695 17062892 21328615 23655373 24375560 27034712 31023440 33793390 34125784 37172729 42657230 47310746 48751120 54069424 67586780 68251568 74345458 85314460 94621492 118276865 135173560 148690916 170628920 185863645 189242984 236553730 260209103 270347120 297381832 341257840 371727290 378485968 473107460 520418206 594763664 743454580 946214920 1040836412 1301045515 1486909160 1892429840 2081672824 2602091030 2973818320 4163345648 5204182060 10408364120 20816728240
• Sum of all divisors σ(n): 61331788800
• Sum of proper divisors (its aliquot sum) s(n): 40515060560
• 20816728240 is an abundant number, because the sum of its proper divisors (40515060560) is greater than itself. Its abundance is 19698332320

Bases of 20816728240

• Binary: 10011011000110001100001000010110000₂
• Hexadecimal: 0x4D8C610B0
• Base-36: 9K9QQB4

Squares and roots of 20816728240

• 20816728240 squared (20816728240²) is 433336174618013497600
• 20816728240 cubed (20816728240³) is 9020641383584372788191092224000
• The square root of 20816728240 is 144280.0341003563
• The cube root of 20816728240 is 2750.8747956309

Scales and comparisons

• 20,816,728,240 seconds is equal to 661 years, 47 weeks, 1 day, 8 hours, 30 minutes, 40 seconds.
• To count from 1 to 20,816,728,240 would take you about one thousand, three hundred twenty-three 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 20816728240 cubic inches would be around 229.2 feet tall.

Recreational maths with 20816728240

• 20816728240 backwards is 04282761802
• 20816728240 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20816728240's digits is 40
• More coming soon!