72139

Names of 72139

• Cardinal: 72139 can be written as Seventy-two thousand, one hundred thirty-nine.

Scientific notation

• Scientific notation: 7.2139 × 10⁴

Factors of 72139

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 72139

Divisors of 72139

• Number of divisors d(n): 2
• Complete list of divisors:
  1 72139
• Sum of all divisors σ(n): 72140
• Sum of proper divisors (its aliquot sum) s(n): 1
• 72139 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 72138

Bases of 72139

• Binary: 10001100111001011₂
• Hexadecimal: 0x119CB
• Base-36: 1JNV

Squares and roots of 72139

• 72139 squared (72139²) is 5204035321
• 72139 cubed (72139³) is 375413904021619
• The square root of 72139 is 268.5870436191
• The cube root of 72139 is 41.6284307007

Scales and comparisons

• 72,139 seconds is equal to 20 hours, 2 minutes, 19 seconds.
• To count from 1 to 72,139 would take you about twenty 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 72139 cubic inches would be around 3.5 feet tall.

Recreational maths with 72139

• 72139 backwards is 93127
• The number of decimal digits it has is: 5
• The sum of 72139's digits is 22
• More coming soon!