129438759736

Names of 129438759736

• Cardinal: 129438759736 can be written as One hundred twenty-nine billion, four hundred thirty-eight million, seven hundred fifty-nine thousand, seven hundred thirty-six.

Scientific notation

• Scientific notation: 1.29438759736 × 10¹¹

Factors of 129438759736

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 993

Divisors of 129438759736

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 8 11 13 22 26 44 52 88 104 121 143 242 286 484 572 967 968 1144 1331 1573 1934 2662 3146 3868 5324 6292 7736 10637 10648 12571 12584 17303 21274 25142 34606 42548 50284 69212 85096 100568 117007 138281 138424 234014 276562 468028 553124 935089 936056 1106248 1287077 1521091 1870178 2574154 3042182 3740356 5148308 6084364 7480712 10285979 10296616 12156157 12168728 16732001 20571958 24312314 33464002 41143916 48624628 66928004 82287832 97249256 113145769 133717727 133856008 226291538 267435454 452583076 534870908 905166152 1069741816 1244603459 1470894997 2489206918 2941789994 4978413836 5883579988 9956827672 11767159976 16179844967 32359689934 64719379868 129438759736
• Sum of all divisors σ(n): 287781364080
• Sum of proper divisors (its aliquot sum) s(n): 158342604344
• 129438759736 is an abundant number, because the sum of its proper divisors (158342604344) is greater than itself. Its abundance is 28903844608

Bases of 129438759736

• Binary: 1111000100011001001101011101100111000₂
• Hexadecimal: 0x1E2326BB38
• Base-36: 1NGOHU7S

Squares and roots of 129438759736

• 129438759736 squared (129438759736²) is 16754392521993934789696
• 129438759736 cubed (129438759736³) is 2168667788177008020892712232480256
• The square root of 129438759736 is 359775.9854909719
• The cube root of 129438759736 is 5058.4964278661

Scales and comparisons

• 129,438,759,736 seconds is equal to 4,115 years, 39 weeks, 19 hours, 2 minutes, 16 seconds.
• To count from 1 to 129,438,759,736 would take you about eight thousand, two hundred thirty-one 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 129438759736 cubic inches would be around 421.5 feet tall.

Recreational maths with 129438759736

• 129438759736 backwards is 637957834921
• The number of decimal digits it has is: 12
• The sum of 129438759736's digits is 64
• More coming soon!