12871143920

Names of 12871143920

• Cardinal: 12871143920 can be written as Twelve billion, eight hundred seventy-one million, one hundred forty-three thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.287114392 × 10¹⁰

Factors of 12871143920

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 2204043

Divisors of 12871143920

• Number of divisors d(n): 40
• Complete list of divisors:
  1 2 4 5 8 10 16 20 40 73 80 146 292 365 584 730 1168 1460 2920 5840 2203963 4407926 8815852 11019815 17631704 22039630 35263408 44079260 88158520 160889299 176317040 321778598 643557196 804446495 1287114392 1608892990 2574228784 3217785980 6435571960 12871143920
• Sum of all divisors σ(n): 30335360496
• Sum of proper divisors (its aliquot sum) s(n): 17464216576
• 12871143920 is an abundant number, because the sum of its proper divisors (17464216576) is greater than itself. Its abundance is 4593072656

Bases of 12871143920

• Binary: 1011111111001011100001000111110000₂
• Hexadecimal: 0x2FF2E11F0
• Base-36: 5WV5A7K

Squares and roots of 12871143920

• 12871143920 squared (12871143920²) is 165666345809352966400
• 12871143920 cubed (12871143920³) is 2132315379612670912613324288000
• The square root of 12871143920 is 113451.0639879591
• The cube root of 12871143920 is 2343.5400626227

Scales and comparisons

• 12,871,143,920 seconds is equal to 409 years, 13 weeks, 4 days, 13 hours, 45 minutes, 20 seconds.
• To count from 1 to 12,871,143,920 would take you about eight 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 12871143920 cubic inches would be around 195.3 feet tall.

Recreational maths with 12871143920

• 12871143920 backwards is 02934117821
• The number of decimal digits it has is: 11
• The sum of 12871143920's digits is 38
• More coming soon!