21426829802168208

Names of 21426829802168208

• Cardinal: 21426829802168208 can be written as Twenty-one quadrillion, four hundred twenty-six trillion, eight hundred twenty-nine billion, eight hundred two million, one hundred sixty-eight thousand, two hundred eight.

Scientific notation

• Scientific notation: 2.1426829802168208 × 10¹⁶

Factors of 21426829802168208

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 777

Divisors of 21426829802168208

• Number of divisors d(n): 200
• Complete list of divisors:
  1 2 3 4 6 8 11 12 16 22 24 33 44 48 66 88 121 132 176 242 264 363 484 528 726 761 968 1331 1452 1522 1936 2283 2662 2904 3044 3993 4566 5324 5808 6088 7986 8371 9132 10648 12176 15972 16742 18264 21296 25113 31944 33484 36528 50226 63888 66968 92081 100452 133936 184162 200904 276243 368324 401808 552486 579121 736648 1012891 1104972 1158242 1473296 1737363 2025782 2209944 2316484 3038673 3474726 4051564 4419888 4632968 6077346 6370331 6949452 8103128 9265936 12154692 12740662 13898904 16206256 19110993 24309384 25481324 27797808 38221986 48618768 50962648 70073641 76443972 101925296 140147282 152887944 210220923 280294564 305775888 420441846 440711081 560589128 770810051 840883692 881422162 1121178256 1322133243 1541620102 1681767384 1762844324 2312430153 2644266486 3083240204 3363534768 3525688648 4624860306 4847821891 5288532972 6166480408 7051377296 9249720612 9695643782 10577065944 12332960816 14543465673 18499441224 19391287564 21154131888 29086931346 36998882448 38782575128 53326040801 58173862692 77565150256 106652081602 116347725384 159978122403 213304163204 232695450768 319956244806 335381132641 426608326408 586586448811 639912489612 670762265282 853216652816 1006143397923 1173172897622 1279824979224 1341524530564 1759759346433 2012286795846 2346345795244 2559649958448 2683049061128 3519518692866 3689192459051 4024573591692 4692691590488 5366098122256 7039037385732 7378384918102 8049147183384 9385383180976 11067577377153 14078074771464 14756769836204 16098294366768 22135154754306 28156149542928 29513539672408 40581117049561 44270309508612 59027079344816 81162234099122 88540619017224 121743351148683 162324468198244 177081238034448 243486702297366 324648936396488 446392287545171 486973404594732 649297872792976 892784575090342 973946809189464 1339176862635513 1785569150180684 1947893618378928 2678353725271026 3571138300361368 5356707450542052 7142276600722736 10713414901084104 21426829802168208
• Sum of all divisors σ(n): 60963859491557280
• Sum of proper divisors (its aliquot sum) s(n): 39537029689389072
• 21426829802168208 is an abundant number, because the sum of its proper divisors (39537029689389072) is greater than itself. Its abundance is 18110199887220864

Bases of 21426829802168208

• Binary: 1001100000111111001011010010011000001010101111110010000₂
• Hexadecimal: 0x4C1F9693055F90
• Base-36: 5UZ6DPZUY6O

Squares and roots of 21426829802168208

• 21426829802168208 squared (21426829802168208²) is 459109035371083687578697925931264
• 21426829802168208 cubed (21426829802168208³) is 9837251161533833898669001184619833699454774054912
• The square root of 21426829802168208 is 146379062.0347329867
• The cube root of 21426829802168208 is 277749.0869672685

Scales and comparisons

• 21,426,829,802,168,208 seconds is equal to 681,306,910 years, 8 weeks, 6 days, 20 hours, 56 minutes, 48 seconds.
• To count from 1 to 21,426,829,802,168,208 would take you about two billion, forty-three million, nine hundred twenty thousand, seven hundred thirty 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 21426829802168208 cubic inches would be around 23145.8 feet tall.

Recreational maths with 21426829802168208

• 21426829802168208 backwards is 80286120892862412
• The number of decimal digits it has is: 17
• The sum of 21426829802168208's digits is 69
• More coming soon!