20909949280

Names of 20909949280

• Cardinal: 20909949280 can be written as Twenty billion, nine hundred nine million, nine hundred forty-nine thousand, two hundred eighty.

Scientific notation

• Scientific notation: 2.090994928 × 10¹⁰

Factors of 20909949280

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 3490

Divisors of 20909949280

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 5 8 10 11 16 20 22 32 40 44 55 59 80 88 110 118 160 176 220 236 295 352 440 472 590 649 880 944 1180 1298 1760 1888 2360 2596 3245 3413 3481 4720 5192 6490 6826 6962 9440 10384 12980 13652 13924 17065 17405 20768 25960 27304 27848 34130 34810 37543 38291 51920 54608 55696 68260 69620 75086 76582 103840 109216 111392 136520 139240 150172 153164 187715 191455 201367 273040 278480 300344 306328 375430 382910 402734 546080 556960 600688 612656 750860 765820 805468 1006835 1201376 1225312 1501720 1531640 1610936 2013670 2215037 3003440 3063280 3221872 4027340 4430074 6006880 6126560 6443744 8054680 8860148 11075185 11880653 16109360 17720296 22150370 23761306 32218720 35440592 44300740 47522612 59403265 70881184 88601480 95045224 118806530 130687183 177202960 190090448 237613060 261374366 354405920 380180896 475226120 522748732 653435915 950452240 1045497464 1306871830 1900904480 2090994928 2613743660 4181989856 5227487320 10454974640 20909949280
• Sum of all divisors σ(n): 54835586064
• Sum of proper divisors (its aliquot sum) s(n): 33925636784
• 20909949280 is an abundant number, because the sum of its proper divisors (33925636784) is greater than itself. Its abundance is 13015687504

Bases of 20909949280

• Binary: 10011011110010101001000000101100000₂
• Hexadecimal: 0x4DE548160
• Base-36: 9LT8S4G

Squares and roots of 20909949280

• 20909949280 squared (20909949280²) is 437225978892172518400
• 20909949280 cubed (20909949280³) is 9142373042533677948753866752000
• The square root of 20909949280 is 144602.7291582009
• The cube root of 20909949280 is 2754.9749847039

Scales and comparisons

• 20,909,949,280 seconds is equal to 664 years, 45 weeks, 2 days, 7 hours, 14 minutes, 40 seconds.
• To count from 1 to 20,909,949,280 would take you about one thousand, three hundred twenty-nine 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 20909949280 cubic inches would be around 229.6 feet tall.

Recreational maths with 20909949280

• 20909949280 backwards is 08294990902
• The number of decimal digits it has is: 11
• The sum of 20909949280's digits is 52
• More coming soon!