72401679945

Names of 72401679945

• Cardinal: 72401679945 can be written as Seventy-two billion, four hundred one million, six hundred seventy-nine thousand, nine hundred forty-five.

Scientific notation

• Scientific notation: 7.2401679945 × 10¹⁰

Factors of 72401679945

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 4690762

Divisors of 72401679945

• Number of divisors d(n): 48
• Complete list of divisors:
  1 3 5 7 9 15 21 35 45 49 63 105 147 245 315 343 441 735 1029 1715 2205 3087 5145 15435 4690747 14072241 23453735 32835229 42216723 70361205 98505687 164176145 211083615 229846603 295517061 492528435 689539809 1149233015 1477585305 1608926221 2068619427 3447699045 4826778663 8044631105 10343097135 14480335989 24133893315 72401679945
• Sum of all divisors σ(n): 146351337600
• Sum of proper divisors (its aliquot sum) s(n): 73949657655
• 72401679945 is an abundant number, because the sum of its proper divisors (73949657655) is greater than itself. Its abundance is 1547977710

Bases of 72401679945

• Binary: 1000011011011011110011111011001001001₂
• Hexadecimal: 0x10DB79F649
• Base-36: X9E39S9

Squares and roots of 72401679945

• 72401679945 squared (72401679945²) is 5242003258858215203025
• 72401679945 cubed (72401679945³) is 379529842218499483263349245833625
• The square root of 72401679945 is 269075.6026565769
• The cube root of 72401679945 is 4167.8896737075

Scales and comparisons

• 72,401,679,945 seconds is equal to 2,302 years, 7 weeks, 5 days, 9 hours, 45 minutes, 45 seconds.
• To count from 1 to 72,401,679,945 would take you about four thousand, six hundred 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 72401679945 cubic inches would be around 347.3 feet tall.

Recreational maths with 72401679945

• 72401679945 backwards is 54997610427
• The number of decimal digits it has is: 11
• The sum of 72401679945's digits is 54
• More coming soon!