21055246940

Names of 21055246940

• Cardinal: 21055246940 can be written as Twenty-one billion, fifty-five million, two hundred forty-six thousand, nine hundred forty.

Scientific notation

• Scientific notation: 2.105524694 × 10¹⁰

Factors of 21055246940

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 889936

Divisors of 21055246940

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 4 5 7 10 13 14 20 26 28 35 52 65 70 91 130 140 169 182 260 338 364 455 676 845 910 1183 1690 1820 2366 3380 4732 5915 11830 23660 889909 1779818 3559636 4449545 6229363 8899090 11568817 12458726 17798180 23137634 24917452 31146815 46275268 57844085 62293630 80981719 115688170 124587260 150394621 161963438 231376340 300789242 323926876 404908595 601578484 751973105 809817190 1052762347 1503946210 1619634380 2105524694 3007892420 4211049388 5263811735 10527623470 21055246940
• Sum of all divisors σ(n): 54718786080
• Sum of proper divisors (its aliquot sum) s(n): 33663539140
• 21055246940 is an abundant number, because the sum of its proper divisors (33663539140) is greater than itself. Its abundance is 12608292200

Bases of 21055246940

• Binary: 10011100110111111011001001001011100₂
• Hexadecimal: 0x4E6FD925C
• Base-36: 9O7R0IK

Squares and roots of 21055246940

• 21055246940 squared (21055246940²) is 443323423704379363600
• 21055246940 cubed (21055246940³) is 9334284160381957060038047384000
• The square root of 21055246940 is 145104.2623081761
• The cube root of 21055246940 is 2761.3414565253

Scales and comparisons

• 21,055,246,940 seconds is equal to 669 years, 25 weeks, 3 days, 23 hours, 42 minutes, 20 seconds.
• To count from 1 to 21,055,246,940 would take you about one thousand, three hundred thirty-eight 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 21055246940 cubic inches would be around 230.1 feet tall.

Recreational maths with 21055246940

• 21055246940 backwards is 04964255012
• The number of decimal digits it has is: 11
• The sum of 21055246940's digits is 38
• More coming soon!