85140

Names of 85140

• Cardinal: 85140 can be written as Eighty-five thousand, one hundred forty.

Scientific notation

• Scientific notation: 8.514 × 10⁴

Factors of 85140

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 64

Divisors of 85140

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 5 6 9 10 11 12 15 18 20 22 30 33 36 43 44 45 55 60 66 86 90 99 110 129 132 165 172 180 198 215 220 258 330 387 396 430 473 495 516 645 660 774 860 946 990 1290 1419 1548 1892 1935 1980 2365 2580 2838 3870 4257 4730 5676 7095 7740 8514 9460 14190 17028 21285 28380 42570 85140
• Sum of all divisors σ(n): 288288
• Sum of proper divisors (its aliquot sum) s(n): 203148
• 85140 is an abundant number, because the sum of its proper divisors (203148) is greater than itself. Its abundance is 118008

Bases of 85140

• Binary: 10100110010010100₂
• Hexadecimal: 0x14C94
• Base-36: 1TP0

Squares and roots of 85140

• 85140 squared (85140²) is 7248819600
• 85140 cubed (85140³) is 617164500744000
• The square root of 85140 is 291.7875939789
• The cube root of 85140 is 43.9924229377

Scales and comparisons

• 85,140 seconds is equal to 23 hours, 39 minutes.
• To count from 1 to 85,140 would take you about twenty-three 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 85140 cubic inches would be around 3.7 feet tall.

Recreational maths with 85140

• 85140 backwards is 04158
• 85140 is a Harshad number.
• The number of decimal digits it has is: 5
• The sum of 85140's digits is 18
• More coming soon!