13128643990

Names of 13128643990

• Cardinal: 13128643990 can be written as Thirteen billion, one hundred twenty-eight million, six hundred forty-three thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 1.312864399 × 10¹⁰

Factors of 13128643990

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 4544

Divisors of 13128643990

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 5 7 10 11 14 22 35 49 55 70 77 98 110 121 154 242 245 343 385 490 539 605 686 770 847 1078 1210 1694 1715 2401 2695 3430 3773 4235 4519 4802 5390 5929 7546 8470 9038 11858 12005 18865 22595 24010 26411 29645 31633 37730 41503 45190 49709 52822 59290 63266 83006 99418 132055 158165 207515 221431 248545 264110 290521 316330 347963 415030 442862 497090 546799 581042 695926 1093598 1107155 1452605 1550017 1739815 2214310 2435741 2733995 2905210 3100034 3479630 3827593 4871482 5467990 7655186 7750085 10850119 12178705 15500170 17050187 19137965 21700238 24357410 26793151 34100374 38275930 53586302 54250595 85250935 108501190 119351309 133965755 170501870 187552057 238702618 267931510 375104114 596756545 937760285 1193513090 1312864399 1875520570 2625728798 6564321995 13128643990
• Sum of all divisors σ(n): 30309284880
• Sum of proper divisors (its aliquot sum) s(n): 17180640890
• 13128643990 is an abundant number, because the sum of its proper divisors (17180640890) is greater than itself. Its abundance is 4051996900

Bases of 13128643990

• Binary: 1100001110100001110011010110010110₂
• Hexadecimal: 0x30E873596
• Base-36: 614GEJA

Squares and roots of 13128643990

• 13128643990 squared (13128643990²) is 172361293016163120100
• 13128643990 cubed (13128643990³) is 2262870053665278919560513199000
• The square root of 13128643990 is 114580.2949463825
• The cube root of 13128643990 is 2359.0652712877

Scales and comparisons

• 13,128,643,990 seconds is equal to 417 years, 23 weeks, 2 days, 21 hours, 33 minutes, 10 seconds.
• To count from 1 to 13,128,643,990 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 13128643990 cubic inches would be around 196.6 feet tall.

Recreational maths with 13128643990

• 13128643990 backwards is 09934682131
• The number of decimal digits it has is: 11
• The sum of 13128643990's digits is 46
• More coming soon!