30020145

Names of 30020145

• Cardinal: 30020145 can be written as Thirty million, twenty thousand, one hundred forty-five.

Scientific notation

• Scientific notation: 3.0020145 × 10⁷

Factors of 30020145

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 409

Divisors of 30020145

• Number of divisors d(n): 32
• Complete list of divisors:
  1 3 5 15 89 113 199 267 339 445 565 597 995 1335 1695 2985 10057 17711 22487 30171 50285 53133 67461 88555 112435 150855 265665 337305 2001343 6004029 10006715 30020145
• Sum of all divisors σ(n): 49248000
• Sum of proper divisors (its aliquot sum) s(n): 19227855
• 30020145 is a deficient number, because the sum of its proper divisors (19227855) is less than itself. Its deficiency is 10792290

Bases of 30020145

• Binary: 1110010100001001000110001₂
• Hexadecimal: 0x1CA1231
• Base-36: HVFOX

Squares and roots of 30020145

• 30020145 squared (30020145²) is 901209105821025
• 30020145 cubed (30020145³) is 27054428032067514548625
• The square root of 30020145 is 5479.0642449235
• The cube root of 30020145 is 310.7927852545

Scales and comparisons

• 30,020,145 seconds is equal to 49 weeks, 4 days, 10 hours, 55 minutes, 45 seconds.
• To count from 1 to 30,020,145 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 30020145 cubic inches would be around 25.9 feet tall.

Recreational maths with 30020145

• 30020145 backwards is 54102003
• 30020145 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 30020145's digits is 15
• More coming soon!