27998900640

Names of 27998900640

• Cardinal: 27998900640 can be written as Twenty-seven billion, nine hundred ninety-eight million, nine hundred thousand, six hundred forty.

Scientific notation

• Scientific notation: 2.799890064 × 10¹⁰

Factors of 27998900640

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 2160419

Divisors of 27998900640

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 32 36 40 45 48 54 60 72 80 81 90 96 108 120 135 144 160 162 180 216 240 270 288 324 360 405 432 480 540 648 720 810 864 1080 1296 1440 1620 2160 2592 3240 4320 6480 12960 2160409 4320818 6481227 8641636 10802045 12962454 17283272 19443681 21604090 25924908 32406135 34566544 38887362 43208180 51849816 58331043 64812270 69133088 77774724 86416360 97218405 103699632 116662086 129624540 155549448 172832720 174993129 194436810 207399264 233324172 259249080 291655215 311098896 345665440 349986258 388873620 466648344 518498160 583310430 622197792 699972516 777747240 874965645 933296688 1036996320 1166620860 1399945032 1555494480 1749931290 1866593376 2333241720 2799890064 3110988960 3499862580 4666483440 5599780128 6999725160 9332966880 13999450320 27998900640
• Sum of all divisors σ(n): 98812832580
• Sum of proper divisors (its aliquot sum) s(n): 70813931940
• 27998900640 is an abundant number, because the sum of its proper divisors (70813931940) is greater than itself. Its abundance is 42815031300

Bases of 27998900640

• Binary: 11010000100110111010101000110100000₂
• Hexadecimal: 0x684DD51A0
• Base-36: CV1TM00

Squares and roots of 27998900640

• 27998900640 squared (27998900640²) is 783938437048592409600
• 27998900640 cubed (27998900640³) is 21949414406800433728248582144000
• The square root of 27998900640 is 167328.7203082603
• The cube root of 27998900640 is 3036.5492296359

Scales and comparisons

• 27,998,900,640 seconds is equal to 890 years, 14 weeks, 3 days, 8 hours, 24 minutes.
• To count from 1 to 27,998,900,640 would take you about one thousand, seven hundred eighty 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 27998900640 cubic inches would be around 253 feet tall.

Recreational maths with 27998900640

• 27998900640 backwards is 04600989972
• 27998900640 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 27998900640's digits is 54
• More coming soon!