129749046280

Names of 129749046280

• Cardinal: 129749046280 can be written as One hundred twenty-nine billion, seven hundred forty-nine million, forty-six thousand, two hundred eighty.

Scientific notation

• Scientific notation: 1.2974904628 × 10¹¹

Factors of 129749046280

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 3894060

Divisors of 129749046280

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 5 7 8 10 14 17 20 28 34 35 40 49 56 68 70 85 98 119 136 140 170 196 238 245 280 340 392 476 490 595 680 833 952 980 1190 1666 1960 2380 3332 4165 4760 6664 8330 16660 33320 3894029 7788058 15576116 19470145 27258203 31152232 38940290 54516406 66198493 77880580 109032812 132396986 136291015 155761160 190807421 218065624 264793972 272582030 330992465 381614842 463389451 529587944 545164060 661984930 763229684 926778902 954037105 1090328120 1323969860 1526459368 1853557804 1908074210 2316947255 2647939720 3243726157 3707115608 3816148420 4633894510 6487452314 7632296840 9267789020 12974904628 16218630785 18535578040 25949809256 32437261570 64874523140 129749046280
• Sum of all divisors σ(n): 359574730200
• Sum of proper divisors (its aliquot sum) s(n): 229825683920
• 129749046280 is an abundant number, because the sum of its proper divisors (229825683920) is greater than itself. Its abundance is 100076637640

Bases of 129749046280

• Binary: 1111000110101101001010101010000001000₂
• Hexadecimal: 0x1E35A55408
• Base-36: 1NLT8CUG

Squares and roots of 129749046280

• 129749046280 squared (129749046280²) is 16834815010569581838400
• 129749046280 cubed (129749046280³) is 2184301191921631363110809081152000
• The square root of 129749046280 is 360206.9492389063
• The cube root of 129749046280 is 5062.5352254665

Scales and comparisons

• 129,749,046,280 seconds is equal to 4,125 years, 32 weeks, 1 day, 1 hour, 44 minutes, 40 seconds.
• To count from 1 to 129,749,046,280 would take you about eight thousand, two hundred fifty-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 129749046280 cubic inches would be around 421.9 feet tall.

Recreational maths with 129749046280

• 129749046280 backwards is 082640947921
• The number of decimal digits it has is: 12
• The sum of 129749046280's digits is 52
• More coming soon!