640435273984

Names of 640435273984

• Cardinal: 640435273984 can be written as Six hundred forty billion, four hundred thirty-five million, two hundred seventy-three thousand, nine hundred eighty-four.

Scientific notation

• Scientific notation: 6.40435273984 × 10¹¹

Factors of 640435273984

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 4560

Divisors of 640435273984

• Number of divisors d(n): 81
• Complete list of divisors:
  1 2 4 8 11 16 22 32 44 64 88 121 128 176 242 256 352 484 704 968 1408 1936 2816 3872 4547 7744 9094 15488 18188 30976 36376 50017 72752 100034 145504 200068 291008 400136 550187 582016 800272 1100374 1164032 1600544 2200748 3201088 4401496 6402176 8802992 12804352 17605984 20675209 35211968 41350418 70423936 82700836 140847872 165401672 227427299 330803344 454854598 661606688 909709196 1323213376 1819418392 2501700289 2646426752 3638836784 5003400578 5292853504 7277673568 10006801156 14555347136 20013602312 29110694272 40027204624 58221388544 80054409248 160108818496 320217636992 640435273984
• Sum of all divisors σ(n): 1405458324991
• Sum of proper divisors (its aliquot sum) s(n): 765023051007
• 640435273984 is an abundant number, because the sum of its proper divisors (765023051007) is greater than itself. Its abundance is 124587777023

Bases of 640435273984

• Binary: 1001010100011100111010101100000100000000₂
• Hexadecimal: 0x951CEAC100
• Base-36: 867MMK1S

Squares and roots of 640435273984

• 640435273984 squared (640435273984²) is 410157340162961147232256
• 640435273984 cubed (640435273984³) is 262679228523814709536436834642427904
• 640435273984 is a perfect square number. Its square root is 800272
• The cube root of 640435273984 is 8619.6920035731

Scales and comparisons

• 640,435,273,984 seconds is equal to 20,363 years, 44 weeks, 5 days, 7 hours, 13 minutes, 4 seconds.
• To count from 1 to 640,435,273,984 would take you about forty thousand, seven hundred twenty-seven 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 640435273984 cubic inches would be around 718.3 feet tall.

Recreational maths with 640435273984

• 640435273984 backwards is 489372534046
• The number of decimal digits it has is: 12
• The sum of 640435273984's digits is 55
• More coming soon!