21520530746

Names of 21520530746

• Cardinal: 21520530746 can be written as Twenty-one billion, five hundred twenty million, five hundred thirty thousand, seven hundred forty-six.

Scientific notation

• Scientific notation: 2.1520530746 × 10¹⁰

Factors of 21520530746

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1097

Divisors of 21520530746

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 11 13 22 26 61 121 122 127 143 242 254 286 671 793 883 1342 1397 1573 1586 1651 1766 2794 3146 3302 7381 7747 8723 9713 11479 14762 15367 15494 17446 18161 19426 22958 30734 36322 53863 85217 95953 100711 106843 107726 112141 126269 170434 191906 199771 201422 213686 224282 252538 399542 592493 700219 937387 1107821 1184986 1233551 1388959 1400438 1457833 1874774 2215642 2467102 2777918 2915666 6517423 6840601 7702409 12186031 13034846 13569061 13681202 15404818 16036163 24372062 27138122 32072326 75246611 84726499 88927813 150493222 169452998 176397793 177855626 352795586 827712721 978205943 1655425442 1956411886 10760265373 21520530746
• Sum of all divisors σ(n): 39188158464
• Sum of proper divisors (its aliquot sum) s(n): 17667627718
• 21520530746 is a deficient number, because the sum of its proper divisors (17667627718) is less than itself. Its deficiency is 3852903028

Bases of 21520530746

• Binary: 10100000010101110010011110100111010₂
• Hexadecimal: 0x502B93D3A
• Base-36: 9VWRNSQ

Squares and roots of 21520530746

• 21520530746 squared (21520530746²) is 463133243589531316516
• 21520530746 cubed (21520530746³) is 9966873208163216100812435600936
• The square root of 21520530746 is 146698.7755436289
• The cube root of 21520530746 is 2781.5336992897

Scales and comparisons

• 21,520,530,746 seconds is equal to 684 years, 14 weeks, 6 days, 5 hours, 12 minutes, 26 seconds.
• To count from 1 to 21,520,530,746 would take you about one thousand, three hundred sixty-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 21520530746 cubic inches would be around 231.8 feet tall.

Recreational maths with 21520530746

• 21520530746 backwards is 64703502512
• The number of decimal digits it has is: 11
• The sum of 21520530746's digits is 35
• More coming soon!