640289501940

Names of 640289501940

• Cardinal: 640289501940 can be written as Six hundred forty billion, two hundred eighty-nine million, five hundred one thousand, nine hundred forty.

Scientific notation

• Scientific notation: 6.4028950194 × 10¹¹

Factors of 640289501940

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 31168

Divisors of 640289501940

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 5 6 10 11 12 15 20 22 30 33 44 55 60 66 110 132 165 220 330 660 31147 62294 93441 124588 155735 186882 311470 342617 373764 467205 622940 685234 934410 1027851 1370468 1713085 1868820 2055702 3426170 4111404 5139255 6852340 10278510 20557020 970135609 1940271218 2910406827 3880542436 4850678045 5820813654 9701356090 10671491699 11641627308 14552034135 19402712180 21342983398 29104068270 32014475097 42685966796 53357458495 58208136540 64028950194 106714916990 128057900388 160072375485 213429833980 320144750970 640289501940
• Sum of all divisors σ(n): 1955856182112
• Sum of proper divisors (its aliquot sum) s(n): 1315566680172
• 640289501940 is an abundant number, because the sum of its proper divisors (1315566680172) is greater than itself. Its abundance is 675277178232

Bases of 640289501940

• Binary: 1001010100010100001110100111001011110100₂
• Hexadecimal: 0x95143A72F4
• Base-36: 8657U5MC

Squares and roots of 640289501940

• 640289501940 squared (640289501940²) is 409970646294573263763600
• 640289501940 cubed (640289501940³) is 262499900925972221580035693901384000
• The square root of 640289501940 is 800180.9182553655
• The cube root of 640289501940 is 8619.0379663799

Scales and comparisons

• 640,289,501,940 seconds is equal to 20,359 years, 11 weeks, 5 days, 2 hours, 59 minutes.
• To count from 1 to 640,289,501,940 would take you about forty thousand, seven hundred eighteen 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 640289501940 cubic inches would be around 718.3 feet tall.

Recreational maths with 640289501940

• 640289501940 backwards is 049105982046
• The number of decimal digits it has is: 12
• The sum of 640289501940's digits is 48
• More coming soon!