21681034167

Names of 21681034167

• Cardinal: 21681034167 can be written as Twenty-one billion, six hundred eighty-one million, thirty-four thousand, one hundred sixty-seven.

Scientific notation

• Scientific notation: 2.1681034167 × 10¹⁰

Factors of 21681034167

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 343

Divisors of 21681034167

• Number of divisors d(n): 72
• Complete list of divisors:
  1 3 13 17 39 51 113 169 197 221 339 507 591 663 1469 1921 2561 2873 3349 4407 5763 7683 8619 10047 12769 19097 22261 24973 33293 38307 43537 57291 66783 74919 99879 130611 165997 217073 289393 324649 378437 497991 565981 651219 868179 973947 1135311 1697943 2157961 2515493 2821949 3762109 4919681 6473883 7546479 8465847 11286327 14759043 32701409 36685337 42763381 63955853 98104227 110056011 128290143 191867559 425118317 555923953 1275354951 1667771859 7227011389 21681034167
• Sum of all divisors σ(n): 33609788784
• Sum of proper divisors (its aliquot sum) s(n): 11928754617
• 21681034167 is a deficient number, because the sum of its proper divisors (11928754617) is less than itself. Its deficiency is 9752279550

Bases of 21681034167

• Binary: 10100001100010010100101001110110111₂
• Hexadecimal: 0x50C4A53B7
• Base-36: 9YKBT13

Squares and roots of 21681034167

• 21681034167 squared (21681034167²) is 470067242550621383889
• 21681034167 cubed (21681034167³) is 10191543946527498451178232335463
• The square root of 21681034167 is 147244.8103228091
• The cube root of 21681034167 is 2788.4316141041

Scales and comparisons

• 21,681,034,167 seconds is equal to 689 years, 20 weeks, 1 day, 21 hours, 29 minutes, 27 seconds.
• To count from 1 to 21,681,034,167 would take you about one thousand, three hundred seventy-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 21681034167 cubic inches would be around 232.4 feet tall.

Recreational maths with 21681034167

• 21681034167 backwards is 76143018612
• 21681034167 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21681034167's digits is 39
• More coming soon!