13128956478

Names of 13128956478

• Cardinal: 13128956478 can be written as Thirteen billion, one hundred twenty-eight million, nine hundred fifty-six thousand, four hundred seventy-eight.

Scientific notation

• Scientific notation: 1.3128956478 × 10¹⁰

Factors of 13128956478

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 5706

Divisors of 13128956478

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 6 9 11 18 22 33 66 99 109 198 218 327 654 981 1199 1962 2398 3597 5581 7194 10791 11162 11881 16743 21582 23762 33486 35643 50229 61391 71286 100458 106929 122782 130691 184173 213858 261382 368346 392073 552519 608329 784146 1105038 1176219 1216658 1824987 2352438 3649974 5474961 6691619 10949922 13383238 20074857 40149714 60224571 66307861 120449142 132615722 198923583 397847166 596770749 729386471 1193541498 1458772942 2188159413 4376318826 6564478239 13128956478
• Sum of all divisors σ(n): 31325000616
• Sum of proper divisors (its aliquot sum) s(n): 18196044138
• 13128956478 is an abundant number, because the sum of its proper divisors (18196044138) is greater than itself. Its abundance is 5067087660

Bases of 13128956478

• Binary: 1100001110100010111111101000111110₂
• Hexadecimal: 0x30E8BFA3E
• Base-36: 614N3NI

Squares and roots of 13128956478

• 13128956478 squared (13128956478²) is 172369498201218164484
• 13128956478 cubed (13128956478³) is 2263031640018492568093481327352
• The square root of 13128956478 is 114581.6585584273
• The cube root of 13128956478 is 2359.0839879641

Scales and comparisons

• 13,128,956,478 seconds is equal to 417 years, 23 weeks, 6 days, 12 hours, 21 minutes, 18 seconds.
• To count from 1 to 13,128,956,478 would take you about eight hundred thirty-four 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 13128956478 cubic inches would be around 196.6 feet tall.

Recreational maths with 13128956478

• 13128956478 backwards is 87465982131
• The number of decimal digits it has is: 11
• The sum of 13128956478's digits is 54
• More coming soon!