21180436252920

Names of 21180436252920

• Cardinal: 21180436252920 can be written as Twenty-one trillion, one hundred eighty billion, four hundred thirty-six million, two hundred fifty-two thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.118043625292 × 10¹³

Factors of 21180436252920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 133411684

Divisors of 21180436252920

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 18 20 21 24 27 28 30 35 36 40 42 45 49 54 56 60 63 70 72 81 84 90 98 105 108 120 126 135 140 147 162 168 180 189 196 210 216 245 252 270 280 294 315 324 360 378 392 405 420 441 490 504 540 567 588 630 648 735 756 810 840 882 945 980 1080 1134 1176 1260 1323 1470 1512 1620 1764 1890 1960 2205 2268 2520 2646 2835 2940 3240 3528 3780 3969 4410 4536 5292 5670 5880 6615 7560 7938 8820 10584 11340 13230 15876 17640 19845 22680 26460 31752 39690 52920 79380 158760 133411667 266823334 400235001 533646668 667058335 800470002 933881669 1067293336 1200705003 1334116670 1600940004 1867763338 2001175005 2401410006 2668233340 2801645007 3201880008 3602115009 3735526676 4002350010 4669408345 4802820012 5336466680 5603290014 6003525015 6537171683 7204230018 7471053352 8004700020 8404935021 9338816690 9605640024 10806345027 11206580028 12007050030 13074343366 14008225035 14408460036 16009400040 16809870042 18010575045 18677633380 19611515049 21612690054 22413160056 24014100060 25214805063 26148686732 28016450070 28816920072 32685858415 33619740084 36021150090 37355266760 39223030098 42024675105 43225380108 48028200120 50429610126 52297373464 54031725135 56032900140 58834545147 65371716830 67239480168 72042300180 75644415189 78446060196 84049350210 86450760216 98057575245 100859220252 108063450270 112065800280 117669090294 126074025315 130743433660 144084600360 151288830378 156892120392 168098700420 176503635441 196115150490 201718440504 216126900540 235338180588 252148050630 261486867320 294172725735 302577660756 336197400840 353007270882 378222075945 392230300980 432253801080 470676361176 504296101260 529510906323 588345451470 605155321512 706014541764 756444151890 784460601960 882518177205 1008592202520 1059021812646 1176690902940 1412029083528 1512888303780 1765036354410 2118043625292 2353381805880 2647554531615 3025776607560 3530072708820 4236087250584 5295109063230 7060145417640 10590218126460 21180436252920
• Sum of all divisors σ(n): 82812624677640
• Sum of proper divisors (its aliquot sum) s(n): 61632188424720
• 21180436252920 is an abundant number, because the sum of its proper divisors (61632188424720) is greater than itself. Its abundance is 40451752171800

Bases of 21180436252920

• Binary: 100110100001101110100011000010000100011111000₂
• Hexadecimal: 0x1343746108F8
• Base-36: 7IA5OVRI0

Squares and roots of 21180436252920

• 21180436252920 squared (21180436252920²) is 448610879864007810208526400
• 21180436252920 cubed (21180436252920³) is 9501774143325969862826695427450897088000
• The square root of 21180436252920 is 4602220.7957593691
• The cube root of 21180436252920 is 27668.0339775025

Scales and comparisons

• 21,180,436,252,920 seconds is equal to 673,472 years, 18 weeks, 4 days, 2 hours, 42 minutes.
• To count from 1 to 21,180,436,252,920 would take you about one million, six hundred eighty-three thousand, six hundred eighty 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 21180436252920 cubic inches would be around 2305.7 feet tall.

Recreational maths with 21180436252920

• 21180436252920 backwards is 02925263408112
• 21180436252920 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21180436252920's digits is 45
• More coming soon!