21813674421

Names of 21813674421

• Cardinal: 21813674421 can be written as Twenty-one billion, eight hundred thirteen million, six hundred seventy-four thousand, four hundred twenty-one.

Scientific notation

• Scientific notation: 2.1813674421 × 10¹⁰

Factors of 21813674421

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 866

Divisors of 21813674421

• Number of divisors d(n): 144
• Complete list of divisors:
  1 3 7 11 21 23 33 49 69 71 77 121 147 161 213 231 253 363 483 497 539 751 759 781 847 1127 1491 1617 1633 1771 2253 2343 2541 2783 3381 3479 4899 5257 5313 5467 5929 8261 8349 8591 10437 11431 12397 15771 16401 17273 17787 17963 19481 24783 25773 34293 36799 37191 38269 51819 53321 53889 57827 58443 60137 80017 90871 110397 114807 120911 125741 136367 159963 173481 180411 190003 197593 240051 272613 362733 373247 377223 404789 409101 420959 570009 586531 592779 636097 846377 880187 1119741 1214367 1226383 1262877 1330021 1383151 1759593 1908291 2090033 2539131 2612729 2640561 3679149 3990063 4105717 4149453 4452679 6270099 6451841 7838187 8584681 9310147 9682057 12317151 13358037 13490213 14630231 19355523 25754043 27930441 28740019 29046171 40470639 43890693 45162887 60092767 86220057 94431491 102411617 135488661 148392343 180278301 283294473 307234851 316140209 445177029 661020437 948420627 1038746401 1983061311 3116239203 7271224807 21813674421
• Sum of all divisors σ(n): 39404703744
• Sum of proper divisors (its aliquot sum) s(n): 17591029323
• 21813674421 is a deficient number, because the sum of its proper divisors (17591029323) is less than itself. Its deficiency is 4222645098

Bases of 21813674421

• Binary: 10100010100001100100100000110110101₂
• Hexadecimal: 0x5143241B5
• Base-36: A0RAQWL

Squares and roots of 21813674421

• 21813674421 squared (21813674421²) is 475836391745389685241
• 21813674421 cubed (21813674421³) is 10379740127197342521618842920461
• The square root of 21813674421 is 147694.5307755165
• The cube root of 21813674421 is 2794.1064139931

Scales and comparisons

• 21,813,674,421 seconds is equal to 693 years, 31 weeks, 4 days, 2 hours, 21 seconds.
• To count from 1 to 21,813,674,421 would take you about one thousand, three hundred eighty-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 21813674421 cubic inches would be around 232.8 feet tall.

Recreational maths with 21813674421

• 21813674421 backwards is 12447631812
• The number of decimal digits it has is: 11
• The sum of 21813674421's digits is 39
• More coming soon!