18025140

Names of 18025140

• Cardinal: 18025140 can be written as Eighteen million, twenty-five thousand, one hundred forty.

Scientific notation

• Scientific notation: 1.802514 × 10⁷

Factors of 18025140

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 6148

Divisors of 18025140

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 49 60 70 84 98 105 140 147 196 210 245 294 420 490 588 735 980 1470 2940 6131 12262 18393 24524 30655 36786 42917 61310 73572 85834 91965 122620 128751 171668 183930 214585 257502 300419 367860 429170 515004 600838 643755 858340 901257 1201676 1287510 1502095 1802514 2575020 3004190 3605028 4506285 6008380 9012570 18025140
• Sum of all divisors σ(n): 58720032
• Sum of proper divisors (its aliquot sum) s(n): 40694892
• 18025140 is an abundant number, because the sum of its proper divisors (40694892) is greater than itself. Its abundance is 22669752

Bases of 18025140

• Binary: 1000100110000101010110100₂
• Hexadecimal: 0x1130AB4
• Base-36: AQCAC

Squares and roots of 18025140

• 18025140 squared (18025140²) is 324905672019600
• 18025140 cubed (18025140³) is 5856470224947372744000
• The square root of 18025140 is 4245.6024307511
• The cube root of 18025140 is 262.1960927341

Scales and comparisons

• 18,025,140 seconds is equal to 29 weeks, 5 days, 14 hours, 59 minutes.
• To count from 1 to 18,025,140 would take you about forty-four weeks!

  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 18025140 cubic inches would be around 21.8 feet tall.

Recreational maths with 18025140

• 18025140 backwards is 04152081
• 18025140 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 18025140's digits is 21
• More coming soon!