13681780

Names of 13681780

• Cardinal: 13681780 can be written as Thirteen million, six hundred eighty-one thousand, seven hundred eighty.

Scientific notation

• Scientific notation: 1.368178 × 10⁷

Factors of 13681780

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 644

Divisors of 13681780

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 4 5 7 10 14 20 23 28 35 46 49 70 92 98 115 140 161 196 230 245 322 460 490 607 644 805 980 1127 1214 1610 2254 2428 3035 3220 4249 4508 5635 6070 8498 11270 12140 13961 16996 21245 22540 27922 29743 42490 55844 59486 69805 84980 97727 118972 139610 148715 195454 279220 297430 390908 488635 594860 684089 977270 1368178 1954540 2736356 3420445 6840890 13681780
• Sum of all divisors σ(n): 34933248
• Sum of proper divisors (its aliquot sum) s(n): 21251468
• 13681780 is an abundant number, because the sum of its proper divisors (21251468) is greater than itself. Its abundance is 7569688

Bases of 13681780

• Binary: 110100001100010001110100₂
• Hexadecimal: 0xD0C474
• Base-36: 858XG

Squares and roots of 13681780

• 13681780 squared (13681780²) is 187191103968400
• 13681780 cubed (13681780³) is 2561107502452775752000
• The square root of 13681780 is 3698.8890223957
• The cube root of 13681780 is 239.1741289231

Scales and comparisons

• 13,681,780 seconds is equal to 22 weeks, 4 days, 8 hours, 29 minutes, 40 seconds.
• To count from 1 to 13,681,780 would take you about thirty-three 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 13681780 cubic inches would be around 19.9 feet tall.

Recreational maths with 13681780

• 13681780 backwards is 08718631
• The number of decimal digits it has is: 8
• The sum of 13681780's digits is 34
• More coming soon!