398021513868

Names of 398021513868

• Cardinal: 398021513868 can be written as Three hundred ninety-eight billion, twenty-one million, five hundred thirteen thousand, eight hundred sixty-eight.

Scientific notation

• Scientific notation: 3.98021513868 × 10¹¹

Factors of 398021513868

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 231591

Divisors of 398021513868

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 9 11 12 18 22 33 36 43 44 66 86 99 101 129 132 172 198 202 258 303 387 396 404 473 516 606 774 909 946 1111 1212 1419 1548 1818 1892 2222 2838 3333 3636 4257 4343 4444 5676 6666 8514 8686 9999 13029 13332 17028 17372 19998 26058 39087 39996 47773 52116 78174 95546 143319 156348 191092 231431 286638 429957 462862 573276 694293 859914 925724 1388586 1719828 2082879 2545741 2777172 4165758 5091482 7637223 8331516 9951533 10182964 15274446 19903066 22911669 23374531 29854599 30548892 39806132 45823338 46749062 59709198 70123593 89563797 91646676 93498124 109466863 119418396 140247186 179127594 210370779 218933726 257119841 280494372 328400589 358255188 420741558 437867452 514239682 656801178 771359523 841483116 985201767 1005104833 1028479364 1313602356 1542719046 1970403534 2010209666 2314078569 3015314499 3085438092 3940807068 4020419332 4628157138 6030628998 9045943497 9256314276 11056153163 12061257996 18091886994 22112306326 33168459489 36183773988 44224612652 66336918978 99505378467 132673837956 199010756934 398021513868
• Sum of all divisors σ(n): 1134224163072
• Sum of proper divisors (its aliquot sum) s(n): 736202649204
• 398021513868 is an abundant number, because the sum of its proper divisors (736202649204) is greater than itself. Its abundance is 338181135336

Bases of 398021513868

• Binary: 101110010101011111011100101001010001100₂
• Hexadecimal: 0x5CABEE528C
• Base-36: 52UJQDN0

Squares and roots of 398021513868

• 398021513868 squared (398021513868²) is 158421125501774516321424
• 398021513868 cubed (398021513868³) is 63055016200888714106636654961508032
• The square root of 398021513868 is 630889.4624797597
• The cube root of 398021513868 is 7355.8949044557

Scales and comparisons

• 398,021,513,868 seconds is equal to 12,655 years, 44 weeks, 2 days, 11 hours, 37 minutes, 48 seconds.
• To count from 1 to 398,021,513,868 would take you about twenty-five thousand, three hundred eleven 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 398021513868 cubic inches would be around 613 feet tall.

Recreational maths with 398021513868

• 398021513868 backwards is 868315120893
• The number of decimal digits it has is: 12
• The sum of 398021513868's digits is 54
• More coming soon!