30142805

Names of 30142805

• Cardinal: 30142805 can be written as Thirty million, one hundred forty-two thousand, eight hundred five.

Scientific notation

• Scientific notation: 3.0142805 × 10⁷

Factors of 30142805

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 1409

Divisors of 30142805

• Number of divisors d(n): 32
• Complete list of divisors:
  1 5 7 11 35 55 59 77 295 385 413 649 1327 2065 3245 4543 6635 9289 14597 22715 46445 72985 78293 102179 391465 510895 548051 861223 2740255 4306115 6028561 30142805
• Sum of all divisors σ(n): 45895680
• Sum of proper divisors (its aliquot sum) s(n): 15752875
• 30142805 is a deficient number, because the sum of its proper divisors (15752875) is less than itself. Its deficiency is 14389930

Bases of 30142805

• Binary: 1110010111111000101010101₂
• Hexadecimal: 0x1CBF155
• Base-36: HY2C5

Squares and roots of 30142805

• 30142805 squared (30142805²) is 908588693268025
• 30142805 cubed (30142805³) is 27387411806382890310125
• The square root of 30142805 is 5490.2463514855
• The cube root of 30142805 is 311.2155018403

Scales and comparisons

• 30,142,805 seconds is equal to 49 weeks, 5 days, 21 hours, 5 seconds.
• To count from 1 to 30,142,805 would take you about twenty-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 30142805 cubic inches would be around 25.9 feet tall.

Recreational maths with 30142805

• 30142805 backwards is 50824103
• The number of decimal digits it has is: 8
• The sum of 30142805's digits is 23
• More coming soon!