21408670899

Names of 21408670899

• Cardinal: 21408670899 can be written as Twenty-one billion, four hundred eight million, six hundred seventy thousand, eight hundred ninety-nine.

Scientific notation

• Scientific notation: 2.1408670899 × 10¹⁰

Factors of 21408670899

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 544

Divisors of 21408670899

• Number of divisors d(n): 240
• Complete list of divisors:
  1 3 7 9 11 21 27 29 33 37 49 63 77 81 87 99 111 147 189 203 231 259 261 297 319 333 407 441 457 539 567 609 693 777 783 891 957 999 1073 1221 1323 1371 1421 1617 1813 1827 2079 2233 2331 2349 2849 2871 2997 3199 3219 3663 3969 4113 4263 4851 5027 5439 5481 6237 6699 6993 7511 8547 8613 9597 9657 10989 11803 12339 12789 13253 14553 15081 15631 16317 16443 16909 19943 20097 20979 22393 22533 25641 25839 28791 28971 32967 35189 35409 37017 38367 39759 43659 45243 46893 48951 50727 52577 59829 60291 67179 67599 76923 82621 86373 86913 92771 105567 106227 115101 118363 119277 135729 140679 145783 146853 152181 157731 179487 180873 185999 201537 202797 230769 246323 247863 259119 278313 316701 318681 355089 357831 407187 422037 437349 456543 473193 490361 538461 557997 578347 604611 608391 649397 738969 743589 828541 834939 950103 956043 1020481 1065267 1073493 1266111 1301993 1312047 1369629 1419579 1471083 1615383 1673991 1735041 1813833 1948191 2216907 2230767 2485623 2504817 2850309 3061443 3195801 3432527 3905979 3936141 4258737 4413249 5021973 5205123 5393971 5844573 6650721 6692301 7143367 7456869 7514451 9113951 9184329 9587403 10297581 11717937 11808423 13239747 15065919 15615369 16181913 17533719 19952163 21430101 22370607 24027689 27341853 27552987 30892743 35153811 37757797 39719241 46846107 48545739 52601157 64290303 67111821 72083067 82025559 82658961 92678229 105461433 113273391 145637217 192870909 216249201 246076677 264304579 278034687 339820173 436911651 578612727 648747603 738230031 792913737 1019460519 1946242809 2378741211 3058381557 7136223633 21408670899
• Sum of all divisors σ(n): 43212739680
• Sum of proper divisors (its aliquot sum) s(n): 21804068781
• 21408670899 is an abundant number, because the sum of its proper divisors (21804068781) is greater than itself. Its abundance is 395397882

Bases of 21408670899

• Binary: 10011111100000011100110010010110011₂
• Hexadecimal: 0x4FC0E64B3
• Base-36: 9U2646R

Squares and roots of 21408670899

• 21408670899 squared (21408670899²) is 458331189661689468201
• 21408670899 cubed (21408670899³) is 9812261602214260973049534582699
• The square root of 21408670899 is 146317.0219044933
• The cube root of 21408670899 is 2776.7060212235

Scales and comparisons

• 21,408,670,899 seconds is equal to 680 years, 37 weeks, 6 days, 13 hours, 1 minute, 39 seconds.
• To count from 1 to 21,408,670,899 would take you about one thousand, three hundred sixty-one 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 21408670899 cubic inches would be around 231.4 feet tall.

Recreational maths with 21408670899

• 21408670899 backwards is 99807680412
• The number of decimal digits it has is: 11
• The sum of 21408670899's digits is 54
• More coming soon!