21498747105

Names of 21498747105

• Cardinal: 21498747105 can be written as Twenty-one billion, four hundred ninety-eight million, seven hundred forty-seven thousand, one hundred five.

Scientific notation

• Scientific notation: 2.1498747105 × 10¹⁰

Factors of 21498747105

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1279

Divisors of 21498747105

• Number of divisors d(n): 128
• Complete list of divisors:
  1 3 5 11 15 23 33 55 69 71 73 115 165 213 219 253 345 355 365 759 781 803 1065 1093 1095 1265 1633 1679 2343 2409 3279 3795 3905 4015 4899 5037 5183 5465 8165 8395 11715 12023 12045 15549 16395 17963 18469 24495 25139 25185 25915 36069 53889 55407 57013 60115 75417 77603 77745 79789 89815 92345 119209 125695 171039 180345 232809 239367 269445 276529 277035 285065 357627 377085 388015 398945 596045 829587 853633 855195 877679 1164045 1196835 1311299 1382645 1784869 1788135 1835147 2560899 2633037 3933897 4147935 4268165 4388395 5354607 5505441 5665019 6556495 8924345 9175735 12804495 13165185 16995057 19633559 19669485 20186617 26773035 27527205 28325095 58900677 60559851 62315209 84975285 98167795 100933085 130295437 186945627 294503385 302799255 311576045 390886311 651477185 934728135 1433249807 1954431555 4299749421 7166249035 21498747105
• Sum of all divisors σ(n): 40288886784
• Sum of proper divisors (its aliquot sum) s(n): 18790139679
• 21498747105 is a deficient number, because the sum of its proper divisors (18790139679) is less than itself. Its deficiency is 2708607426

Bases of 21498747105

• Binary: 10100000001011011001101100011100001₂
• Hexadecimal: 0x5016CD8E1
• Base-36: 9VJSRFL

Squares and roots of 21498747105

• 21498747105 squared (21498747105²) is 462196127084745881025
• 21498747105 cubed (21498747105³) is 9936637649105392599346893182625
• The square root of 21498747105 is 146624.5105874185
• The cube root of 21498747105 is 2780.5948688615

Scales and comparisons

• 21,498,747,105 seconds is equal to 683 years, 30 weeks, 6 days, 2 hours, 11 minutes, 45 seconds.
• To count from 1 to 21,498,747,105 would take you about one thousand, three hundred sixty-seven 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 21498747105 cubic inches would be around 231.7 feet tall.

Recreational maths with 21498747105

• 21498747105 backwards is 50174789412
• The number of decimal digits it has is: 11
• The sum of 21498747105's digits is 48
• More coming soon!