128288737990

Names of 128288737990

• Cardinal: 128288737990 can be written as One hundred twenty-eight billion, two hundred eighty-eight million, seven hundred thirty-seven thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 1.2828873799 × 10¹¹

Factors of 128288737990

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 305662

Divisors of 128288737990

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 5 7 10 14 35 49 70 98 245 490 859 1718 4295 6013 8590 12026 30065 42091 60130 84182 210455 304789 420910 609578 1523945 2133523 3047890 4267046 10667615 14934661 21335230 29869322 74673305 149346610 261813751 523627502 1309068755 1832696257 2618137510 3665392514 9163481285 12828873799 18326962570 25657747598 64144368995 128288737990
• Sum of all divisors σ(n): 268934504400
• Sum of proper divisors (its aliquot sum) s(n): 140645766410
• 128288737990 is an abundant number, because the sum of its proper divisors (140645766410) is greater than itself. Its abundance is 12357028420

Bases of 128288737990

• Binary: 1110111011110100110101100101011000110₂
• Hexadecimal: 0x1DDE9ACAC6
• Base-36: 1MXNSVRA

Squares and roots of 128288737990

• 128288737990 squared (128288737990²) is 16458000295066869240100
• 128288737990 cubed (128288737990³) is 2111376087693176277472779301399000
• The square root of 128288737990 is 358174.1727009363
• The cube root of 128288737990 is 5043.4708024373

Scales and comparisons

• 128,288,737,990 seconds is equal to 4,079 years, 9 weeks, 4 days, 8 hours, 33 minutes, 10 seconds.
• To count from 1 to 128,288,737,990 would take you about eight thousand, one hundred fifty-eight 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 128288737990 cubic inches would be around 420.3 feet tall.

Recreational maths with 128288737990

• 128288737990 backwards is 099737882821
• The number of decimal digits it has is: 12
• The sum of 128288737990's digits is 64
• More coming soon!