129513230

Names of 129513230

• Cardinal: 129513230 can be written as One hundred twenty-nine million, five hundred thirteen thousand, two hundred thirty.

Scientific notation

• Scientific notation: 1.2951323 × 10⁸

Factors of 129513230

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 222

Divisors of 129513230

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 5 7 10 11 14 22 23 35 46 55 70 71 77 103 110 115 142 154 161 206 230 253 322 355 385 497 506 515 710 721 770 781 805 994 1030 1133 1265 1442 1562 1610 1633 1771 2266 2369 2485 2530 3266 3542 3605 3905 4738 4970 5467 5665 7210 7313 7810 7931 8165 8855 10934 11330 11431 11845 14626 15862 16330 16583 17710 17963 22862 23690 26059 27335 33166 35926 36565 39655 51191 52118 54670 57155 73130 79310 80443 82915 89815 102382 114310 125741 130295 160886 165830 168199 179630 182413 251482 255955 260590 336398 364826 402215 511910 563101 628705 804430 840995 912065 1126202 1177393 1257410 1681990 1824130 1850189 2354786 2815505 3700378 5631010 5886965 9250945 11773930 12951323 18501890 25902646 64756615 129513230
• Sum of all divisors σ(n): 310542336
• Sum of proper divisors (its aliquot sum) s(n): 181029106
• 129513230 is an abundant number, because the sum of its proper divisors (181029106) is greater than itself. Its abundance is 51515876

Bases of 129513230

• Binary: 111101110000011011100001110₂
• Hexadecimal: 0x7B8370E
• Base-36: 253X1Q

Squares and roots of 129513230

• 129513230 squared (129513230²) is 16773676745032900
• 129513230 cubed (129513230³) is 2172413054225097335267000
• The square root of 129513230 is 11380.3879547229
• The cube root of 129513230 is 505.9466346883

Scales and comparisons

• 129,513,230 seconds is equal to 4 years, 6 weeks, 23 hours, 53 minutes, 50 seconds.
• To count from 1 to 129,513,230 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 129513230 cubic inches would be around 42.2 feet tall.

Recreational maths with 129513230

• 129513230 backwards is 032315921
• The number of decimal digits it has is: 9
• The sum of 129513230's digits is 26
• More coming soon!