6400645900

Names of 6400645900

• Cardinal: 6400645900 can be written as Six billion, four hundred million, six hundred forty-five thousand, nine hundred.

Scientific notation

• Scientific notation: 6.4006459 × 10⁹

Factors of 6400645900

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2568

Divisors of 6400645900

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 5 10 11 19 20 22 25 38 44 50 55 76 95 100 110 121 190 209 220 242 275 380 418 475 484 550 605 836 950 1045 1100 1210 1331 1900 2090 2299 2420 2531 2662 3025 4180 4598 5062 5225 5324 6050 6655 9196 10124 10450 11495 12100 12655 13310 20900 22990 25289 25310 26620 27841 33275 45980 48089 50578 50620 55682 57475 63275 66550 96178 101156 111364 114950 126445 126550 133100 139205 192356 229900 240445 252890 253100 278410 306251 480890 505780 528979 556820 612502 632225 696025 961780 1057958 1202225 1225004 1264450 1392050 1531255 2115916 2404450 2528900 2644895 2784100 3062510 3368761 4808900 5289790 5818769 6125020 6737522 7656275 10579580 11637538 13224475 13475044 15312550 16843805 23275076 26448950 29093845 30625100 33687610 52897900 58187690 64006459 67375220 84219025 116375380 128012918 145469225 168438050 256025836 290938450 320032295 336876100 581876900 640064590 1280129180 1600161475 3200322950 6400645900
• Sum of all divisors σ(n): 16087720320
• Sum of proper divisors (its aliquot sum) s(n): 9687074420
• 6400645900 is an abundant number, because the sum of its proper divisors (9687074420) is greater than itself. Its abundance is 3286428520

Bases of 6400645900

• Binary: 101111101100000100001101100001100₂
• Hexadecimal: 0x17D821B0C
• Base-36: 2XUS1ZG

Squares and roots of 6400645900

• 6400645900 squared (6400645900²) is 40968267937186810000
• 6400645900 cubed (6400645900³) is 262223376202256212960579000000
• The square root of 6400645900 is 80004.0367731529
• The cube root of 6400645900 is 1856.6979897239

Scales and comparisons

• 6,400,645,900 seconds is equal to 203 years, 27 weeks, 13 hours, 11 minutes, 40 seconds.
• To count from 1 to 6,400,645,900 would take you about four hundred 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 6400645900 cubic inches would be around 154.7 feet tall.

Recreational maths with 6400645900

• 6400645900 backwards is 0095460046
• The number of decimal digits it has is: 10
• The sum of 6400645900's digits is 34
• More coming soon!