30398991

Names of 30398991

• Cardinal: 30398991 can be written as Thirty million, three hundred ninety-eight thousand, nine hundred ninety-one.

Scientific notation

• Scientific notation: 3.0398991 × 10⁷

Factors of 30398991

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 1447581

Divisors of 30398991

• Number of divisors d(n): 8
• Complete list of divisors:
  1 3 7 21 1447571 4342713 10132997 30398991
• Sum of all divisors σ(n): 46322304
• Sum of proper divisors (its aliquot sum) s(n): 15923313
• 30398991 is a deficient number, because the sum of its proper divisors (15923313) is less than itself. Its deficiency is 14475678

Bases of 30398991

• Binary: 1110011111101101000001111₂
• Hexadecimal: 0x1CFDA0F
• Base-36: I3K0F

Squares and roots of 30398991

• 30398991 squared (30398991²) is 924098653818081
• 30398991 cubed (30398991³) is 28091666660527959956271
• The square root of 30398991 is 5513.5279993847
• The cube root of 30398991 is 312.0946971753

Scales and comparisons

• 30,398,991 seconds is equal to 50 weeks, 1 day, 20 hours, 9 minutes, 51 seconds.
• To count from 1 to 30,398,991 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 30398991 cubic inches would be around 26 feet tall.

Recreational maths with 30398991

• 30398991 backwards is 19989303
• The number of decimal digits it has is: 8
• The sum of 30398991's digits is 42
• More coming soon!