640134495

Names of 640134495

• Cardinal: 640134495 can be written as Six hundred forty million, one hundred thirty-four thousand, four hundred ninety-five.

Scientific notation

• Scientific notation: 6.40134495 × 10⁸

Factors of 640134495

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1618

Divisors of 640134495

• Number of divisors d(n): 160
• Complete list of divisors:
  1 3 5 7 9 11 13 15 21 27 33 35 39 45 55 63 65 77 81 91 99 105 117 135 143 165 189 195 231 273 297 315 351 385 405 429 455 495 567 585 693 715 819 891 945 1001 1053 1155 1287 1365 1485 1579 1755 2079 2145 2457 2835 3003 3465 3861 4095 4455 4737 5005 5265 6237 6435 7371 7895 9009 10395 11053 11583 12285 14211 15015 17369 19305 20527 23685 27027 31185 33159 36855 42633 45045 52107 55265 57915 61581 71055 81081 86845 99477 102635 121583 127899 135135 143689 156321 165795 184743 213165 225797 260535 298431 307905 364749 405405 431067 468963 497385 554229 607915 639495 677391 718445 781605 895293 923715 1094247 1128985 1293201 1406889 1492155 1580579 1662687 1823745 2032173 2155335 2344815 2771145 3282741 3386955 3879603 4476465 4741737 5471235 6096519 6466005 7034445 7902895 8313435 9848223 10160865 11638809 14225211 16413705 18289557 19398015 23708685 30482595 42675633 49241115 58194045 71126055 91447785 128026899 213378165 640134495
• Sum of all divisors σ(n): 1541675520
• Sum of proper divisors (its aliquot sum) s(n): 901541025
• 640134495 is an abundant number, because the sum of its proper divisors (901541025) is greater than itself. Its abundance is 261406530

Bases of 640134495

• Binary: 100110001001111010110101011111₂
• Hexadecimal: 0x2627AD5F
• Base-36: AL4AXR

Squares and roots of 640134495

• 640134495 squared (640134495²) is 409772171688905025
• 640134495 cubed (640134495³) is 262309302189130515281337375
• The square root of 640134495 is 25300.8793325449
• The cube root of 640134495 is 861.8342385957

Scales and comparisons

• 640,134,495 seconds is equal to 20 years, 18 weeks, 2 days, 23 hours, 8 minutes, 15 seconds.
• To count from 1 to 640,134,495 would take you about thirty 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 640134495 cubic inches would be around 71.8 feet tall.

Recreational maths with 640134495

• 640134495 backwards is 594431046
• The number of decimal digits it has is: 9
• The sum of 640134495's digits is 36
• More coming soon!