398128999902603740693

Names of 398128999902603740693

• Cardinal: 398128999902603740693 can be written as Three hundred ninety-eight quintillion, one hundred twenty-eight quadrillion, nine hundred ninety-nine trillion, nine hundred two billion, six hundred three million, seven hundred forty thousand, six hundred ninety-three.

Scientific notation

• Scientific notation: 3.98128999902603740693 × 10²⁰

Factors of 398128999902603740693

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 565902

Divisors of 398128999902603740693

• Number of divisors d(n): 12
• Complete list of divisors:
  1 13 169 2197 565889 7356557 95635241 1243258133 320230360321 4162994684173 54118930894249 703546101625237
• Sum of all divisors σ(n): 398129058506106497636
• Sum of proper divisors (its aliquot sum) s(n): 58603502756943
• 398128999902603740693 is a deficient number, because the sum of its proper divisors (58603502756943) is less than itself. Its deficiency is 398128941299100983750

Bases of 398128999902603740693

• Binary: 101011001010100100110010110000000100010011000001110011000011000010101₂
• Hexadecimal: 0x159526580898398615
• Base-36: 2C0SPJV8984VTH

Squares and roots of 398128999902603740693

• 398128999902603740693 squared (398128999902603740693²) is 158506700563447449366212825326996384120249
• 398128999902603740693 cubed (398128999902603740693³) is 63106114173186809858746415150272326273313377225772851326592557
• The square root of 398128999902603740693 is 19953170171.7447330725
• 398128999902603740693 is a perfect cube number. Its cube root is 7356557

Scales and comparisons

• 398,128,999,902,603,740,693 seconds is equal to 293,274,701,009 years, 3 weeks, 3 days, 15 hours, 30 minutes, 7 seconds.
• To count from 1 to 398,128,999,902,603,740,693 would take you about two hundred ninety-three billion, two hundred seventy-four million, seven hundred one thousand and nine 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 398128999902603740693 cubic inches would be around 613046.4 feet tall.

Recreational maths with 398128999902603740693

• 398128999902603740693 backwards is 396047306209999821893
• The number of decimal digits it has is: 21
• The sum of 398128999902603740693's digits is 107
• More coming soon!