20853840

Names of 20853840

• Cardinal: 20853840 can be written as Twenty million, eight hundred fifty-three thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.085384 × 10⁷

Factors of 20853840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 12430

Divisors of 20853840

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 35 40 42 48 56 60 70 80 84 105 112 120 140 168 210 240 280 336 420 560 840 1680 12413 24826 37239 49652 62065 74478 86891 99304 124130 148956 173782 186195 198608 248260 260673 297912 347564 372390 434455 496520 521346 595824 695128 744780 868910 993040 1042692 1303365 1390256 1489560 1737820 2085384 2606730 2979120 3475640 4170768 5213460 6951280 10426920 20853840
• Sum of all divisors σ(n): 73888128
• Sum of proper divisors (its aliquot sum) s(n): 53034288
• 20853840 is an abundant number, because the sum of its proper divisors (53034288) is greater than itself. Its abundance is 32180448

Bases of 20853840

• Binary: 1001111100011010001010000₂
• Hexadecimal: 0x13E3450
• Base-36: CEYXC

Squares and roots of 20853840

• 20853840 squared (20853840²) is 434882642745600
• 20853840 cubed (20853840³) is 9068973050593903104000
• The square root of 20853840 is 4566.6004861385
• The cube root of 20853840 is 275.2508564973

Scales and comparisons

• 20,853,840 seconds is equal to 34 weeks, 3 days, 8 hours, 44 minutes.
• To count from 1 to 20,853,840 would take you about fifty-one weeks!

  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 20853840 cubic inches would be around 22.9 feet tall.

Recreational maths with 20853840

• 20853840 backwards is 04835802
• 20853840 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 20853840's digits is 30
• More coming soon!