21673447642

Names of 21673447642

• Cardinal: 21673447642 can be written as Twenty-one billion, six hundred seventy-three million, four hundred forty-seven thousand, six hundred forty-two.

Scientific notation

• Scientific notation: 2.1673447642 × 10¹⁰

Factors of 21673447642

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 3411

Divisors of 21673447642

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 7 11 14 22 49 77 98 121 154 242 343 539 686 847 1078 1331 1694 2401 2662 3391 3773 4802 5929 6782 7546 9317 11858 18634 23737 26411 37301 41503 47474 52822 65219 74602 83006 130438 166159 261107 290521 332318 410311 456533 522214 581042 820622 913066 1163113 1827749 2326226 2872177 3195731 3655498 4513421 5744354 6391462 8141791 9026842 12794243 16283582 20105239 25588486 31593947 40210478 63187894 89559701 140736673 179119402 221157629 281473346 442315258 985156711 1548103403 1970313422 3096206806 10836723821 21673447642
• Sum of all divisors σ(n): 41728356864
• Sum of proper divisors (its aliquot sum) s(n): 20054909222
• 21673447642 is a deficient number, because the sum of its proper divisors (20054909222) is less than itself. Its deficiency is 1618538420

Bases of 21673447642

• Binary: 10100001011110101101001000011011010₂
• Hexadecimal: 0x50BD690DA
• Base-36: 9YFT78A

Squares and roots of 21673447642

• 21673447642 squared (21673447642²) is 469738332690515360164
• 21673447642 cubed (21673447642³) is 10180849159008261648511226533288
• The square root of 21673447642 is 147219.0464647833
• The cube root of 21673447642 is 2788.1063378913

Scales and comparisons

• 21,673,447,642 seconds is equal to 689 years, 7 weeks, 5 days, 2 hours, 7 minutes, 22 seconds.
• To count from 1 to 21,673,447,642 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 21673447642 cubic inches would be around 232.3 feet tall.

Recreational maths with 21673447642

• 21673447642 backwards is 24674437612
• The number of decimal digits it has is: 11
• The sum of 21673447642's digits is 46
• More coming soon!