72129632085

Names of 72129632085

• Cardinal: 72129632085 can be written as Seventy-two billion, one hundred twenty-nine million, six hundred thirty-two thousand and eighty-five.

Scientific notation

• Scientific notation: 7.2129632085 × 10¹⁰

Factors of 72129632085

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1368

Divisors of 72129632085

• Number of divisors d(n): 160
• Complete list of divisors:
  1 3 5 7 9 15 21 27 35 45 61 63 81 105 135 183 189 305 315 405 427 549 567 631 661 915 945 1281 1647 1893 1983 2135 2745 2835 3155 3305 3843 4417 4627 4941 5679 5949 6405 8235 9465 9915 11529 13251 13881 17037 17847 19215 22085 23135 24705 28395 29745 34587 38491 39753 40321 41643 51111 53541 57645 66255 69405 85185 89235 115473 119259 120963 124929 172935 192455 198765 201605 208215 255555 267705 269437 282247 346419 357777 362889 374787 417091 577365 596295 604815 624645 808311 846741 1039257 1088667 1251273 1347185 1411235 1732095 1788885 1814445 1873935 2085455 2424933 2540223 2919637 3117771 3266001 3753819 4041555 4233705 5196285 5443335 6256365 7274799 7620669 8758911 11261457 12124665 12701115 14598185 15588855 16330005 18769095 21824397 22862007 25442551 26276733 33784371 36373995 38103345 43794555 56307285 76327653 78830199 109121985 114310035 127212755 131383665 168921855 178097857 228982959 236490597 381638265 394150995 534293571 686948877 890489285 1144914795 1182452985 1602880713 2060846631 2671467855 3434744385 4808642139 8014403565 10304233155 14425926417 24043210695 72129632085
• Sum of all divisors σ(n): 150658404864
• Sum of proper divisors (its aliquot sum) s(n): 78528772779
• 72129632085 is an abundant number, because the sum of its proper divisors (78528772779) is greater than itself. Its abundance is 6399140694

Bases of 72129632085

• Binary: 1000011001011010000101101011101010101₂
• Hexadecimal: 0x10CB42D755
• Base-36: X4W4CB9

Squares and roots of 72129632085

• 72129632085 squared (72129632085²) is 5202683824717461447225
• 72129632085 cubed (72129632085³) is 375267670131451123263510894214125
• The square root of 72129632085 is 268569.6037994621
• The cube root of 72129632085 is 4162.6628677447

Scales and comparisons

• 72,129,632,085 seconds is equal to 2,293 years, 25 weeks, 6 days, 16 hours, 54 minutes, 45 seconds.
• To count from 1 to 72,129,632,085 would take you about four thousand, five hundred eighty-six 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 72129632085 cubic inches would be around 346.9 feet tall.

Recreational maths with 72129632085

• 72129632085 backwards is 58023692127
• 72129632085 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 72129632085's digits is 45
• More coming soon!