997400688921

Names of 997400688921

• Cardinal: 997400688921 can be written as Nine hundred ninety-seven billion, four hundred million, six hundred eighty-eight thousand, nine hundred twenty-one.

Scientific notation

• Scientific notation: 9.97400688921 × 10¹¹

Factors of 997400688921

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 5092

Divisors of 997400688921

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 7 9 13 21 39 63 91 117 273 317 819 951 1033 2219 2853 3099 3719 4121 6657 7231 9297 11157 12363 13429 19971 21693 26033 28847 33471 37089 40287 48347 65079 78099 86541 94003 120861 145041 234297 259623 282009 327461 338429 435123 846027 982383 1015287 1178923 2292227 2947149 3045861 3536769 3841727 4256993 6876681 8252461 10610307 11525181 12770979 15325999 20630043 24757383 26892089 29798951 34575543 38312937 45977997 49942451 74272149 80676267 89396853 107281993 137933991 149827353 242028801 268190559 321845979 349597157 449482059 965537937 1048791471 1217827459 3146374413 3653482377 8524792213 10960447131 15831756967 25574376639 47495270901 76723129917 110822298769 142485812703 332466896307 997400688921
• Sum of all divisors σ(n): 1780951011840
• Sum of proper divisors (its aliquot sum) s(n): 783550322919
• 997400688921 is a deficient number, because the sum of its proper divisors (783550322919) is less than itself. Its deficiency is 213850366002

Bases of 997400688921

• Binary: 1110100000111001101101101011100100011001₂
• Hexadecimal: 0xE839B6B919
• Base-36: CQ76M909

Squares and roots of 997400688921

• 997400688921 squared (997400688921²) is 994808134260085412144241
• 997400688921 cubed (997400688921³) is 992222318455223852664968193222653961
• The square root of 997400688921 is 998699.4988088259
• The cube root of 997400688921 is 9991.3281117459

Scales and comparisons

• 997,400,688,921 seconds is equal to 31,714 years, 13 weeks, 2 days, 10 hours, 55 minutes, 21 seconds.
• To count from 1 to 997,400,688,921 would take you about sixty-three thousand, four hundred twenty-eight 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 997400688921 cubic inches would be around 832.6 feet tall.

Recreational maths with 997400688921

• 997400688921 backwards is 129886004799
• 997400688921 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 997400688921's digits is 63
• More coming soon!