7428136905

Names of 7428136905

• Cardinal: 7428136905 can be written as Seven billion, four hundred twenty-eight million, one hundred thirty-six thousand, nine hundred five.

Scientific notation

• Scientific notation: 7.428136905 × 10⁹

Factors of 7428136905

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 3420

Divisors of 7428136905

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 5 7 9 15 21 35 45 63 67 105 109 201 315 327 335 469 545 603 763 981 1005 1407 1635 2289 2345 3015 3229 3815 4221 4905 6867 7035 7303 9687 11445 16145 21105 21909 22603 29061 34335 36515 48435 51121 65727 67809 109545 113015 145305 153363 203427 216343 255605 328635 339045 351961 460089 649029 766815 1017135 1055883 1081715 1514401 1759805 1947087 2300445 2463727 3167649 3245145 4543203 5279415 7391181 7572005 9735435 12318635 13629609 15838245 22173543 22716015 23581387 36955905 68148045 70744161 110867715 117906935 165069709 212232483 353720805 495209127 825348545 1061162415 1485627381 2476045635 7428136905
• Sum of all divisors σ(n): 15076089600
• Sum of proper divisors (its aliquot sum) s(n): 7647952695
• 7428136905 is an abundant number, because the sum of its proper divisors (7647952695) is greater than itself. Its abundance is 219815790

Bases of 7428136905

• Binary: 110111010110000000101111111001001₂
• Hexadecimal: 0x1BAC05FC9
• Base-36: 3EUIR49

Squares and roots of 7428136905

• 7428136905 squared (7428136905²) is 55177217879422979025
• 7428136905 cubed (7428136905³) is 409863928445367670600643417625
• The square root of 7428136905 is 86186.6399449473
• The cube root of 7428136905 is 1951.1618677451

Scales and comparisons

• 7,428,136,905 seconds is equal to 236 years, 9 weeks, 6 days, 19 hours, 21 minutes, 45 seconds.
• To count from 1 to 7,428,136,905 would take you about four hundred seventy-two 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 7428136905 cubic inches would be around 162.6 feet tall.

Recreational maths with 7428136905

• 7428136905 backwards is 5096318247
• 7428136905 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 7428136905's digits is 45
• More coming soon!