30478921

Names of 30478921

• Cardinal: 30478921 can be written as Thirty million, four hundred seventy-eight thousand, nine hundred twenty-one.

Scientific notation

• Scientific notation: 3.0478921 × 10⁷

Factors of 30478921

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 89423

Divisors of 30478921

• Number of divisors d(n): 8
• Complete list of divisors:
  1 11 31 341 89381 983191 2770811 30478921
• Sum of all divisors σ(n): 34322688
• Sum of proper divisors (its aliquot sum) s(n): 3843767
• 30478921 is a deficient number, because the sum of its proper divisors (3843767) is less than itself. Its deficiency is 26635154

Bases of 30478921

• Binary: 1110100010001001001001001₂
• Hexadecimal: 0x1D11249
• Base-36: I59OP

Squares and roots of 30478921

• 30478921 squared (30478921²) is 928964625324241
• 30478921 cubed (30478921³) is 28313839427052140823961
• The square root of 30478921 is 5520.7717757575
• The cube root of 30478921 is 312.3679945931

Scales and comparisons

• 30,478,921 seconds is equal to 50 weeks, 2 days, 18 hours, 22 minutes, 1 second.
• To count from 1 to 30,478,921 would take you about twenty-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 30478921 cubic inches would be around 26 feet tall.

Recreational maths with 30478921

• 30478921 backwards is 12987403
• The number of decimal digits it has is: 8
• The sum of 30478921's digits is 34
• More coming soon!