129671490

Names of 129671490

• Cardinal: 129671490 can be written as One hundred twenty-nine million, six hundred seventy-one thousand, four hundred ninety.

Scientific notation

• Scientific notation: 1.2967149 × 10⁸

Factors of 129671490

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 1683

Divisors of 129671490

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 5 6 10 13 15 26 30 39 65 78 130 195 233 390 466 699 1165 1398 1427 2330 2854 3029 3495 4281 6058 6990 7135 8562 9087 14270 15145 18174 18551 21405 30290 37102 42810 45435 55653 90870 92755 111306 185510 278265 332491 556530 664982 997473 1662455 1994946 3324910 4322383 4987365 8644766 9974730 12967149 21611915 25934298 43223830 64835745 129671490
• Sum of all divisors σ(n): 336825216
• Sum of proper divisors (its aliquot sum) s(n): 207153726
• 129671490 is an abundant number, because the sum of its proper divisors (207153726) is greater than itself. Its abundance is 77482236

Bases of 129671490

• Binary: 111101110101010000101000010₂
• Hexadecimal: 0x7BAA142
• Base-36: 257B5U

Squares and roots of 129671490

• 129671490 squared (129671490²) is 16814695318820100
• 129671490 cubed (129671490³) is 2180386595887427408949000
• The square root of 129671490 is 11387.3390219135
• The cube root of 129671490 is 506.1526330045

Scales and comparisons

• 129,671,490 seconds is equal to 4 years, 6 weeks, 2 days, 19 hours, 51 minutes, 30 seconds.
• To count from 1 to 129,671,490 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 129671490 cubic inches would be around 42.2 feet tall.

Recreational maths with 129671490

• 129671490 backwards is 094176921
• 129671490 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 129671490's digits is 39
• More coming soon!