12820012155

Names of 12820012155

• Cardinal: 12820012155 can be written as Twelve billion, eight hundred twenty million, twelve thousand, one hundred fifty-five.

Scientific notation

• Scientific notation: 1.2820012155 × 10¹⁰

Factors of 12820012155

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 225

Divisors of 12820012155

• Number of divisors d(n): 120
• Complete list of divisors:
  1 3 5 9 15 27 37 45 67 81 111 113 135 185 201 333 335 339 405 555 565 603 999 1005 1017 1665 1695 1809 2479 2997 3015 3051 4181 4995 5085 5427 7437 7571 9045 9153 12395 12543 12769 14985 15255 20905 22311 22713 27135 37185 37629 37855 38307 45765 62715 63845 66933 68139 111555 112887 113565 114921 188145 191535 200799 204417 280127 334665 338661 340695 344763 472453 564435 574605 613251 840381 855523 1003995 1022085 1034289 1400635 1417359 1693305 1723815 2362265 2521143 2566569 3066255 4201905 4252077 4277615 5171445 7086795 7563429 7699707 12605715 12756231 12832845 21260385 22690287 23099121 31654351 37817145 38268693 38498535 63781155 69297363 94963053 113451435 115495605 158271755 191343465 284889159 346486815 474815265 854667477 1424445795 2564002431 4273337385 12820012155
• Sum of all divisors σ(n): 24168301872
• Sum of proper divisors (its aliquot sum) s(n): 11348289717
• 12820012155 is a deficient number, because the sum of its proper divisors (11348289717) is less than itself. Its deficiency is 1471722438

Bases of 12820012155

• Binary: 1011111100001000011101110001111011₂
• Hexadecimal: 0x2FC21DC7B
• Base-36: 5W0PCOR

Squares and roots of 12820012155

• 12820012155 squared (12820012155²) is 164352711654347744025
• 12820012155 cubed (12820012155³) is 2107003761115948236997328623875
• The square root of 12820012155 is 113225.4925138327
• The cube root of 12820012155 is 2340.4326369683

Scales and comparisons

• 12,820,012,155 seconds is equal to 407 years, 33 weeks, 18 hours, 29 minutes, 15 seconds.
• To count from 1 to 12,820,012,155 would take you about eight hundred fifteen 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 12820012155 cubic inches would be around 195 feet tall.

Recreational maths with 12820012155

• 12820012155 backwards is 55121002821
• 12820012155 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 12820012155's digits is 27
• More coming soon!