21390544931760

Names of 21390544931760

• Cardinal: 21390544931760 can be written as Twenty-one trillion, three hundred ninety billion, five hundred forty-four million, nine hundred thirty-one thousand, seven hundred sixty.

Scientific notation

• Scientific notation: 2.139054493176 × 10¹³

Factors of 21390544931760

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 66463448

Divisors of 21390544931760

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 36 40 45 48 54 60 72 80 90 108 120 135 144 149 180 216 240 270 298 360 432 447 540 596 720 745 894 1080 1192 1341 1490 1788 2160 2235 2384 2682 2980 3576 4023 4470 5364 5960 6705 7152 8046 8940 10728 11920 13410 16092 17880 20115 21456 26820 32184 35760 40230 53640 64368 80460 107280 160920 321840 66463289 132926578 199389867 265853156 332316445 398779734 531706312 598169601 664632890 797559468 996949335 1063412624 1196339202 1329265780 1595118936 1794508803 1993898670 2392678404 2658531560 2990848005 3190237872 3589017606 3987797340 4785356808 5317063120 5981696010 7178035212 7975594680 8972544015 9570713616 9903030061 11963392020 14356070424 15951189360 17945088030 19806060122 23926784040 28712140848 29709090183 35890176060 39612120244 47853568080 49515150305 59418180366 71780352120 79224240488 89127270549 99030300610 118836360732 143560704240 148545450915 158448480976 178254541098 198060601220 237672721464 267381811647 297090901830 356509082196 396121202440 445636352745 475345442928 534763623294 594181803660 713018164392 792242404880 891272705490 1069527246588 1188363607320 1336909058235 1426036328784 1782545410980 2139054493176 2376727214640 2673818116470 3565090821960 4278108986352 5347636232940 7130181643920 10695272465880 21390544931760
• Sum of all divisors σ(n): 74173031640000
• Sum of proper divisors (its aliquot sum) s(n): 52782486708240
• 21390544931760 is an abundant number, because the sum of its proper divisors (52782486708240) is greater than itself. Its abundance is 31391941776480

Bases of 21390544931760

• Binary: 100110111010001011111110101010000101110110000₂
• Hexadecimal: 0x13745FD50BB0
• Base-36: 7KYOI5XO0

Squares and roots of 21390544931760

• 21390544931760 squared (21390544931760²) is 457555412477643423056697600
• 21390544931760 cubed (21390544931760³) is 9787359609373011787373940374802955776000
• The square root of 21390544931760 is 4624991.3439659539
• The cube root of 21390544931760 is 27759.2215357709

Scales and comparisons

• 21,390,544,931,760 seconds is equal to 680,153 years, 8 weeks, 3 days, 12 hours, 36 minutes.
• To count from 1 to 21,390,544,931,760 would take you about one million, seven hundred thousand, three hundred eighty-two 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 21390544931760 cubic inches would be around 2313.3 feet tall.

Recreational maths with 21390544931760

• 21390544931760 backwards is 06713944509312
• 21390544931760 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21390544931760's digits is 54
• More coming soon!