20489320845

Names of 20489320845

• Cardinal: 20489320845 can be written as Twenty billion, four hundred eighty-nine million, three hundred twenty thousand, eight hundred forty-five.

Scientific notation

• Scientific notation: 2.0489320845 × 10¹⁰

Factors of 20489320845

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 171

Divisors of 20489320845

• Number of divisors d(n): 192
• Complete list of divisors:
  1 3 5 7 9 15 21 27 29 35 45 49 63 87 105 127 135 145 147 189 203 245 261 315 381 435 441 609 635 735 783 841 889 945 1015 1143 1305 1323 1421 1827 1905 2205 2523 2667 3045 3429 3683 3915 4205 4263 4445 5481 5715 5887 6223 6615 7105 7569 8001 9135 11049 12615 12789 13335 17145 17661 18415 18669 21315 22707 24003 24389 25781 27405 29435 31115 33147 37845 38367 40005 41209 52983 55245 56007 63945 73167 77343 88305 93345 99441 106807 113535 120015 121945 123627 128905 158949 165735 168021 170723 180467 191835 206045 219501 232029 264915 280035 320421 365835 370881 386715 497205 512169 534035 541401 618135 658503 696087 747649 794745 840105 853615 902335 961263 1097505 1112643 1160145 1195061 1536507 1602105 1624203 1854405 2242947 2560845 2707005 2883789 3097403 3292515 3480435 3585183 3738245 4609521 4806315 4872609 5233543 5563215 5975305 6728841 7682535 8121015 9292209 10755549 11214735 14418945 15487015 15700629 17925915 20186523 21681821 23047605 24363045 26167715 27876627 32266647 33644205 46461045 47101887 53777745 65045463 78503145 83629881 100932615 108409105 139383135 141305661 151772747 161333235 195136389 235509435 325227315 418149405 455318241 585409167 706528305 758863735 975681945 1365954723 2276591205 2927045835 4097864169 6829773615 20489320845
• Sum of all divisors σ(n): 44231270400
• Sum of proper divisors (its aliquot sum) s(n): 23741949555
• 20489320845 is an abundant number, because the sum of its proper divisors (23741949555) is greater than itself. Its abundance is 3252628710

Bases of 20489320845

• Binary: 10011000101010000100011100110001101₂
• Hexadecimal: 0x4C542398D
• Base-36: 9EUT959

Squares and roots of 20489320845

• 20489320845 squared (20489320845²) is 419812268689351514025
• 20489320845 cubed (20489320845³) is 8601668267843470805844742351125
• The square root of 20489320845 is 143140.9125477409
• The cube root of 20489320845 is 2736.3765147713

Scales and comparisons

• 20,489,320,845 seconds is equal to 651 years, 25 weeks, 5 days, 22 hours, 45 seconds.
• To count from 1 to 20,489,320,845 would take you about one thousand, three hundred 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 20489320845 cubic inches would be around 228 feet tall.

Recreational maths with 20489320845

• 20489320845 backwards is 54802398402
• 20489320845 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20489320845's digits is 45
• More coming soon!