129838

Names of 129838

• Cardinal: 129838 can be written as One hundred twenty-nine thousand, eight hundred thirty-eight.

Scientific notation

• Scientific notation: 1.29838 × 10⁵

Factors of 129838

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 64921

Divisors of 129838

• Number of divisors d(n): 4
• Complete list of divisors:
  1 2 64919 129838
• Sum of all divisors σ(n): 194760
• Sum of proper divisors (its aliquot sum) s(n): 64922
• 129838 is a deficient number, because the sum of its proper divisors (64922) is less than itself. Its deficiency is 64916

Bases of 129838

• Binary: 11111101100101110₂
• Hexadecimal: 0x1FB2E
• Base-36: 2S6M

Squares and roots of 129838

• 129838 squared (129838²) is 16857906244
• 129838 cubed (129838³) is 2188796830908472
• The square root of 129838 is 360.3304039351
• The cube root of 129838 is 50.6369189029

Scales and comparisons

• 129,838 seconds is equal to 1 day, 12 hours, 3 minutes, 58 seconds.
• To count from 1 to 129,838 would take you about twelve hours.

  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 129838 cubic inches would be around 4.2 feet tall.

Recreational maths with 129838

• 129838 backwards is 838921
• The number of decimal digits it has is: 6
• The sum of 129838's digits is 31
• More coming soon!