728143130

Names of 728143130

• Cardinal: 728143130 can be written as Seven hundred twenty-eight million, one hundred forty-three thousand, one hundred thirty.

Scientific notation

• Scientific notation: 7.2814313 × 10⁸

Factors of 728143130

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 1839

Divisors of 728143130

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 5 10 11 13 22 26 55 65 110 130 143 286 349 698 715 1430 1459 1745 2918 3490 3839 4537 7295 7678 9074 14590 16049 18967 19195 22685 32098 37934 38390 45370 49907 80245 94835 99814 160490 189670 208637 249535 417274 499070 509191 1018382 1043185 2086370 2545955 5091910 5601101 6619483 11202202 13238966 28005505 33097415 56011010 66194830 72814313 145628626 364071565 728143130
• Sum of all divisors σ(n): 1545264000
• Sum of proper divisors (its aliquot sum) s(n): 817120870
• 728143130 is an abundant number, because the sum of its proper divisors (817120870) is greater than itself. Its abundance is 88977740

Bases of 728143130

• Binary: 101011011001101001010100011010₂
• Hexadecimal: 0x2B66951A
• Base-36: C1IMU2

Squares and roots of 728143130

• 728143130 squared (728143130²) is 530192417766196900
• 728143130 cubed (728143130³) is 386055966574546218962297000
• The square root of 728143130 is 26984.1273714753
• The cube root of 728143130 is 899.6472403529

Scales and comparisons

• 728,143,130 seconds is equal to 23 years, 7 weeks, 6 days, 13 hours, 58 minutes, 50 seconds.
• To count from 1 to 728,143,130 would take you about thirty-four 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 728143130 cubic inches would be around 75 feet tall.

Recreational maths with 728143130

• 728143130 backwards is 031341827
• The number of decimal digits it has is: 9
• The sum of 728143130's digits is 29
• More coming soon!