130013987

Names of 130013987

• Cardinal: 130013987 can be written as One hundred thirty million, thirteen thousand, nine hundred eighty-seven.

Scientific notation

• Scientific notation: 1.30013987 × 10⁸

Factors of 130013987

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 1749

Divisors of 130013987

• Number of divisors d(n): 8
• Complete list of divisors:
  1 257 521 971 133897 249547 505891 130013987
• Sum of all divisors σ(n): 130905072
• Sum of proper divisors (its aliquot sum) s(n): 891085
• 130013987 is a deficient number, because the sum of its proper divisors (891085) is less than itself. Its deficiency is 129122902

Bases of 130013987

• Binary: 111101111111101101100100011₂
• Hexadecimal: 0x7BFDB23
• Base-36: 25ENFN

Squares and roots of 130013987

• 130013987 squared (130013987²) is 16903636815636169
• 130013987 cubed (130013987³) is 2197709217200842273095803
• The square root of 130013987 is 11402.3676050195
• The cube root of 130013987 is 506.5978692849

Scales and comparisons

• 130,013,987 seconds is equal to 4 years, 6 weeks, 6 days, 18 hours, 59 minutes, 47 seconds.
• To count from 1 to 130,013,987 would take you about six years!

  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 130013987 cubic inches would be around 42.2 feet tall.

Recreational maths with 130013987

• 130013987 backwards is 789310031
• The number of decimal digits it has is: 9
• The sum of 130013987's digits is 32
• More coming soon!