129440700

Names of 129440700

• Cardinal: 129440700 can be written as One hundred twenty-nine million, four hundred forty thousand, seven hundred.

Scientific notation

• Scientific notation: 1.294407 × 10⁸

Factors of 129440700

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 452

Divisors of 129440700

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 20 25 27 30 36 45 50 54 60 75 90 100 108 135 150 180 191 225 251 270 300 382 450 502 540 573 675 753 764 900 955 1004 1146 1255 1350 1506 1719 1910 2259 2292 2510 2700 2865 3012 3438 3765 3820 4518 4775 5020 5157 5730 6275 6777 6876 7530 8595 9036 9550 10314 11295 11460 12550 13554 14325 15060 17190 18825 19100 20628 22590 25100 25785 27108 28650 33885 34380 37650 42975 45180 47941 51570 56475 57300 67770 75300 85950 95882 103140 112950 128925 135540 143823 169425 171900 191764 225900 239705 257850 287646 338850 431469 479410 515700 575292 677700 719115 862938 958820 1198525 1294407 1438230 1725876 2157345 2397050 2588814 2876460 3595575 4314690 4794100 5177628 6472035 7191150 8629380 10786725 12944070 14382300 21573450 25888140 32360175 43146900 64720350 129440700
• Sum of all divisors σ(n): 419973120
• Sum of proper divisors (its aliquot sum) s(n): 290532420
• 129440700 is an abundant number, because the sum of its proper divisors (290532420) is greater than itself. Its abundance is 161091720

Bases of 129440700

• Binary: 111101101110001101110111100₂
• Hexadecimal: 0x7B71BBC
• Base-36: 252D30

Squares and roots of 129440700

• 129440700 squared (129440700²) is 16754894816490000
• 129440700 cubed (129440700³) is 2168765313472837143000000
• The square root of 129440700 is 11377.2008859825
• The cube root of 129440700 is 505.8521703061

Scales and comparisons

• 129,440,700 seconds is equal to 4 years, 6 weeks, 3 hours, 45 minutes.
• To count from 1 to 129,440,700 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 129440700 cubic inches would be around 42.2 feet tall.

Recreational maths with 129440700

• 129440700 backwards is 007044921
• 129440700 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 129440700's digits is 27
• More coming soon!