13161645

Names of 13161645

• Cardinal: 13161645 can be written as Thirteen million, one hundred sixty-one thousand, six hundred forty-five.

Scientific notation

• Scientific notation: 1.3161645 × 10⁷

Factors of 13161645

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 189

Divisors of 13161645

• Number of divisors d(n): 72
• Complete list of divisors:
  1 3 5 7 9 15 21 35 45 47 49 63 105 127 141 147 235 245 315 329 381 423 441 635 705 735 889 987 1143 1645 1905 2115 2205 2303 2667 2961 4445 4935 5715 5969 6223 6909 8001 11515 13335 14805 17907 18669 20727 29845 31115 34545 40005 41783 53721 56007 89535 93345 103635 125349 208915 268605 280035 292481 376047 626745 877443 1462405 1880235 2632329 4387215 13161645
• Sum of all divisors σ(n): 27316224
• Sum of proper divisors (its aliquot sum) s(n): 14154579
• 13161645 is an abundant number, because the sum of its proper divisors (14154579) is greater than itself. Its abundance is 992934

Bases of 13161645

• Binary: 110010001101010010101101₂
• Hexadecimal: 0xC8D4AD
• Base-36: 7U3L9

Squares and roots of 13161645

• 13161645 squared (13161645²) is 173228899106025
• 13161645 cubed (13161645³) is 2279977273774318411125
• The square root of 13161645 is 3627.8981518229
• The cube root of 13161645 is 236.1040250495

Scales and comparisons

• 13,161,645 seconds is equal to 21 weeks, 5 days, 8 hours, 45 seconds.
• To count from 1 to 13,161,645 would take you about thirty-two 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 13161645 cubic inches would be around 19.7 feet tall.

Recreational maths with 13161645

• 13161645 backwards is 54616131
• The number of decimal digits it has is: 8
• The sum of 13161645's digits is 27
• More coming soon!