72144

Names of 72144

• Cardinal: 72144 can be written as Seventy-two thousand, one hundred forty-four.

Scientific notation

• Scientific notation: 7.2144 × 10⁴

Factors of 72144

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 172

Divisors of 72144

• Number of divisors d(n): 40
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 108 144 167 216 334 432 501 668 1002 1336 1503 2004 2672 3006 4008 4509 6012 8016 9018 12024 18036 24048 36072 72144
• Sum of all divisors σ(n): 208320
• Sum of proper divisors (its aliquot sum) s(n): 136176
• 72144 is an abundant number, because the sum of its proper divisors (136176) is greater than itself. Its abundance is 64032

Bases of 72144

• Binary: 10001100111010000₂
• Hexadecimal: 0x119D0
• Base-36: 1JO0

Squares and roots of 72144

• 72144 squared (72144²) is 5204756736
• 72144 cubed (72144³) is 375491969961984
• The square root of 72144 is 268.5963514271
• The cube root of 72144 is 41.6293924429

Scales and comparisons

• 72,144 seconds is equal to 20 hours, 2 minutes, 24 seconds.
• To count from 1 to 72,144 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 72144 cubic inches would be around 3.5 feet tall.

Recreational maths with 72144

• 72144 backwards is 44127
• 72144 is a Harshad number.
• The number of decimal digits it has is: 5
• The sum of 72144's digits is 18
• More coming soon!