138704505680

Names of 138704505680

• Cardinal: 138704505680 can be written as One hundred thirty-eight billion, seven hundred four million, five hundred five thousand, six hundred eighty.

Scientific notation

• Scientific notation: 1.3870450568 × 10¹¹

Factors of 138704505680

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 3223

Divisors of 138704505680

• Number of divisors d(n): 90
• Complete list of divisors:
  1 2 4 5 8 10 13 16 20 26 40 52 65 80 104 130 169 208 260 338 520 676 845 1040 1352 1690 2704 3203 3380 6406 6760 12812 13520 16015 25624 32030 41639 51248 64060 83278 128120 166556 208195 256240 333112 416390 541307 666224 832780 1082614 1665560 2165228 2706535 3331120 4330456 5413070 8660912 10259209 10826140 20518418 21652280 41036836 43304560 51296045 82073672 102592090 133369717 164147344 205184180 266739434 410368360 533478868 666848585 820736720 1066957736 1333697170 1733806321 2133915472 2667394340 3467612642 5334788680 6935225284 8669031605 10669577360 13870450568 17338063210 27740901136 34676126420 69352252840 138704505680
• Sum of all divisors σ(n): 349312013694
• Sum of proper divisors (its aliquot sum) s(n): 210607508014
• 138704505680 is an abundant number, because the sum of its proper divisors (210607508014) is greater than itself. Its abundance is 71903002334

Bases of 138704505680

• Binary: 10000001001011011011101100101101010000₂
• Hexadecimal: 0x204B6ECB50
• Base-36: 1RPX2XJK

Squares and roots of 138704505680

• 138704505680 squared (138704505680²) is 19238939895933152262400
• 138704505680 cubed (138704505680³) is 2668527648072638526880365650432000
• The square root of 138704505680 is 372430.5380604549
• The cube root of 138704505680 is 5176.4281423907

Scales and comparisons

• 138,704,505,680 seconds is equal to 4,410 years, 19 weeks, 3 days, 5 hours, 21 minutes, 20 seconds.
• To count from 1 to 138,704,505,680 would take you about eight thousand, eight hundred twenty 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 138704505680 cubic inches would be around 431.4 feet tall.

Recreational maths with 138704505680

• 138704505680 backwards is 086505407831
• The number of decimal digits it has is: 12
• The sum of 138704505680's digits is 47
• More coming soon!