129929738180

Names of 129929738180

• Cardinal: 129929738180 can be written as One hundred twenty-nine billion, nine hundred twenty-nine million, seven hundred thirty-eight thousand, one hundred eighty.

Scientific notation

• Scientific notation: 1.2992973818 × 10¹¹

Factors of 129929738180

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 857

Divisors of 129929738180

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 4 5 10 11 20 22 44 55 110 220 839 1678 3356 4195 8390 9229 16780 18458 36916 46145 92290 184580 703921 1407842 2815684 3519605 7039210 7743131 14078420 15486262 30972524 38715655 77431310 154862620 590589719 1181179438 2362358876 2952948595 5905897190 6496486909 11811794380 12992973818 25985947636 32482434545 64964869090 129929738180
• Sum of all divisors σ(n): 298012417920
• Sum of proper divisors (its aliquot sum) s(n): 168082679740
• 129929738180 is an abundant number, because the sum of its proper divisors (168082679740) is greater than itself. Its abundance is 38152941560

Bases of 129929738180

• Binary: 1111001000000011010100111011111000100₂
• Hexadecimal: 0x1E406A77C4
• Base-36: 1NOST7LW

Squares and roots of 129929738180

• 129929738180 squared (129929738180²) is 16881736863523349712400
• 129929738180 cubed (129929738180³) is 2193439650701243220448710299432000
• The square root of 129929738180 is 360457.6787640957
• The cube root of 129929738180 is 5064.8842081733

Scales and comparisons

• 129,929,738,180 seconds is equal to 4,131 years, 18 weeks, 6 days, 9 hours, 56 minutes, 20 seconds.
• To count from 1 to 129,929,738,180 would take you about eight thousand, two hundred sixty-two 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 129929738180 cubic inches would be around 422.1 feet tall.

Recreational maths with 129929738180

• 129929738180 backwards is 081837929921
• The number of decimal digits it has is: 12
• The sum of 129929738180's digits is 59
• More coming soon!