129130736

Names of 129130736

• Cardinal: 129130736 can be written as One hundred twenty-nine million, one hundred thirty thousand, seven hundred thirty-six.

Scientific notation

• Scientific notation: 1.29130736 × 10⁸

Factors of 129130736

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 600

Divisors of 129130736

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 7 8 14 16 28 29 56 58 83 112 116 166 203 232 332 406 464 479 581 664 812 958 1162 1328 1624 1916 2324 2407 3248 3353 3832 4648 4814 6706 7664 9296 9628 13412 13891 16849 19256 26824 27782 33698 38512 39757 53648 55564 67396 79514 97237 111128 134792 159028 194474 222256 269584 278299 318056 388948 556598 636112 777896 1113196 1152953 1555792 2226392 2305906 4452784 4611812 8070671 9223624 16141342 18447248 32282684 64565368 129130736
• Sum of all divisors σ(n): 299980800
• Sum of proper divisors (its aliquot sum) s(n): 170850064
• 129130736 is an abundant number, because the sum of its proper divisors (170850064) is greater than itself. Its abundance is 41719328

Bases of 129130736

• Binary: 111101100100110000011110000₂
• Hexadecimal: 0x7B260F0
• Base-36: 24VPWW

Squares and roots of 129130736

• 129130736 squared (129130736²) is 16674746979901696
• 129130736 cubed (129130736³) is 2153222350128483212128256
• The square root of 129130736 is 11363.5705656277
• The cube root of 129130736 is 505.4480694693

Scales and comparisons

• 129,130,736 seconds is equal to 4 years, 5 weeks, 3 days, 13 hours, 38 minutes, 56 seconds.
• To count from 1 to 129,130,736 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 129130736 cubic inches would be around 42.1 feet tall.

Recreational maths with 129130736

• 129130736 backwards is 637031921
• The number of decimal digits it has is: 9
• The sum of 129130736's digits is 32
• More coming soon!