129040128

Names of 129040128

• Cardinal: 129040128 can be written as One hundred twenty-nine million, forty thousand, one hundred twenty-eight.

Scientific notation

• Scientific notation: 1.29040128 × 10⁸

Factors of 129040128

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 139

Divisors of 129040128

• Number of divisors d(n): 270
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 32 36 42 48 49 54 56 63 64 72 81 84 96 98 108 112 126 127 128 144 147 162 168 189 192 196 216 224 252 254 256 288 294 324 336 378 381 384 392 432 441 448 504 508 567 576 588 648 672 756 762 768 784 864 882 889 896 1008 1016 1134 1143 1152 1176 1296 1323 1344 1512 1524 1568 1728 1764 1778 1792 2016 2032 2268 2286 2304 2352 2592 2646 2667 2688 3024 3048 3136 3429 3456 3528 3556 3969 4032 4064 4536 4572 4704 5184 5292 5334 5376 6048 6096 6223 6272 6858 6912 7056 7112 7938 8001 8064 8128 9072 9144 9408 10287 10368 10584 10668 12096 12192 12446 12544 13716 14112 14224 15876 16002 16128 16256 18144 18288 18669 18816 20574 20736 21168 21336 24003 24192 24384 24892 27432 28224 28448 31752 32004 32512 36288 36576 37338 37632 41148 42336 42672 48006 48384 48768 49784 54864 56007 56448 56896 63504 64008 72009 72576 73152 74676 82296 84672 85344 96012 97536 99568 109728 112014 112896 113792 127008 128016 144018 145152 146304 149352 164592 168021 169344 170688 192024 199136 219456 224028 227584 254016 256032 288036 292608 298704 329184 336042 338688 341376 384048 398272 438912 448056 504063 508032 512064 576072 597408 658368 672084 682752 768096 796544 877824 896112 1008126 1016064 1024128 1152144 1194816 1316736 1344168 1536192 1593088 1792224 2016252 2048256 2304288 2389632 2633472 2688336 3072384 3584448 4032504 4608576 4779264 5376672 6144768 7168896 8065008 9217152 10753344 14337792 16130016 18434304 21506688 32260032 43013376 64520064 129040128
• Sum of all divisors σ(n): 451118976
• Sum of proper divisors (its aliquot sum) s(n): 322078848
• 129040128 is an abundant number, because the sum of its proper divisors (322078848) is greater than itself. Its abundance is 193038720

Bases of 129040128

• Binary: 111101100001111111100000000₂
• Hexadecimal: 0x7B0FF00
• Base-36: 24TS00

Squares and roots of 129040128

• 129040128 squared (129040128²) is 16651354634256384
• 129040128 cubed (129040128³) is 2148692933377836976177152
• The square root of 129040128 is 11359.5830909413
• The cube root of 129040128 is 505.3298214675

Scales and comparisons

• 129,040,128 seconds is equal to 4 years, 5 weeks, 2 days, 12 hours, 28 minutes, 48 seconds.
• To count from 1 to 129,040,128 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 129040128 cubic inches would be around 42.1 feet tall.

Recreational maths with 129040128

• 129040128 backwards is 821040921
• 129040128 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 129040128's digits is 27
• More coming soon!