129408136

Names of 129408136

• Cardinal: 129408136 can be written as One hundred twenty-nine million, four hundred eight thousand, one hundred thirty-six.

Scientific notation

• Scientific notation: 1.29408136 × 10⁸

Factors of 129408136

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 187

Divisors of 129408136

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 4 8 11 13 22 26 31 41 44 52 62 82 88 89 104 124 143 164 178 248 286 328 341 356 403 451 533 572 682 712 806 902 979 1066 1144 1157 1271 1364 1612 1804 1958 2132 2314 2542 2728 2759 3224 3608 3649 3916 4264 4433 4628 5084 5518 5863 7298 7832 8866 9256 10168 11036 11726 12727 13981 14596 16523 17732 22072 23452 25454 27962 29192 30349 33046 35464 35867 40139 46904 47437 50908 55924 60698 66092 71734 80278 94874 101816 111848 113119 121396 132184 143468 160556 181753 189748 226238 242792 286936 321112 363506 379496 394537 452476 521807 727012 789074 904952 1043614 1244309 1454024 1470547 1578148 2087228 2488618 2941094 3156296 4174456 4977236 5882188 9954472 11764376 16176017 32352034 64704068 129408136
• Sum of all divisors σ(n): 304819200
• Sum of proper divisors (its aliquot sum) s(n): 175411064
• 129408136 is an abundant number, because the sum of its proper divisors (175411064) is greater than itself. Its abundance is 46002928

Bases of 129408136

• Binary: 111101101101001110010001000₂
• Hexadecimal: 0x7B69C88
• Base-36: 251NYG

Squares and roots of 129408136

• 129408136 squared (129408136²) is 16746465662994496
• 129408136 cubed (129408136³) is 2167128906036121905619456
• The square root of 129408136 is 11375.7696882453
• The cube root of 129408136 is 505.8097468859

Scales and comparisons

• 129,408,136 seconds is equal to 4 years, 5 weeks, 6 days, 18 hours, 42 minutes, 16 seconds.
• To count from 1 to 129,408,136 would take you about 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 129408136 cubic inches would be around 42.2 feet tall.

Recreational maths with 129408136

• 129408136 backwards is 631804921
• The number of decimal digits it has is: 9
• The sum of 129408136's digits is 34
• More coming soon!