21240351636490

Names of 21240351636490

• Cardinal: 21240351636490 can be written as Twenty-one trillion, two hundred forty billion, three hundred fifty-one million, six hundred thirty-six thousand, four hundred ninety.

Scientific notation

• Scientific notation: 2.124035163649 × 10¹³

Factors of 21240351636490

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 621

Divisors of 21240351636490

• Number of divisors d(n): 108
• Complete list of divisors:
  1 2 5 7 10 14 35 49 70 98 245 343 490 607 686 1214 1715 2401 3035 3430 4249 4802 6070 8498 12005 16807 21245 24010 29743 33614 42490 59486 84035 117649 148715 168070 208201 235298 297430 368449 416402 588245 736898 823543 1041005 1176490 1457407 1647086 1842245 2082010 2579143 2914814 3684490 4117715 5158286 5764801 7287035 8235430 10201849 11529602 12895715 14574070 18054001 20403698 25791430 28824005 36108002 51009245 57648010 71412943 90270005 102018490 126378007 142825886 180540010 252756014 357064715 499890601 631890035 714129430 884646049 999781202 1263780070 1769292098 2499453005 3499234207 4423230245 4998906010 6192522343 6998468414 8846460490 12385044686 17496171035 30962611715 34992342070 43347656401 61925223430 86695312802 216738282005 303433594807 433476564010 606867189614 1517167974035 2124035163649 3034335948070 4248070327298 10620175818245 21240351636490
• Sum of all divisors σ(n): 44678342308626
• Sum of proper divisors (its aliquot sum) s(n): 23437990672136
• 21240351636490 is an abundant number, because the sum of its proper divisors (23437990672136) is greater than itself. Its abundance is 2197639035646

Bases of 21240351636490

• Binary: 100110101000101100111100111010011110000001010₂
• Hexadecimal: 0x1351679D3C0A
• Base-36: 7J1OKYDCA

Squares and roots of 21240351636490

• 21240351636490 squared (21240351636490²) is 451152537641743421099520100
• 21240351636490 cubed (21240351636490³) is 9582638541205421199687882951188648449000
• The square root of 21240351636490 is 4608725.5978730175
• The cube root of 21240351636490 is 27694.0985992305

Scales and comparisons

• 21,240,351,636,490 seconds is equal to 675,377 years, 25 weeks, 4 hours, 48 minutes, 10 seconds.
• To count from 1 to 21,240,351,636,490 would take you about one million, six hundred eighty-eight thousand, four hundred forty-three 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 21240351636490 cubic inches would be around 2307.8 feet tall.

Recreational maths with 21240351636490

• 21240351636490 backwards is 09463615304212
• The number of decimal digits it has is: 14
• The sum of 21240351636490's digits is 46
• More coming soon!