21321281250

Names of 21321281250

• Cardinal: 21321281250 can be written as Twenty-one billion, three hundred twenty-one million, two hundred eighty-one thousand, two hundred fifty.

Scientific notation

• Scientific notation: 2.132128125 × 10¹⁰

Factors of 21321281250

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 94

Divisors of 21321281250

• Number of divisors d(n): 252
• Complete list of divisors:
  1 2 3 5 6 9 10 15 18 25 30 41 43 45 50 75 82 86 90 123 125 129 150 205 215 225 246 250 258 369 375 387 410 430 450 615 625 645 738 750 774 1025 1075 1125 1230 1250 1290 1763 1845 1849 1875 1935 2050 2150 2250 3075 3125 3225 3526 3690 3698 3750 3870 5125 5289 5375 5547 5625 6150 6250 6450 8815 9225 9245 9375 9675 10250 10578 10750 11094 11250 15375 15625 15867 16125 16641 17630 18450 18490 18750 19350 25625 26445 26875 27735 28125 30750 31250 31734 32250 33282 44075 46125 46225 46875 48375 51250 52890 53750 55470 56250 75809 76875 79335 80625 83205 88150 92250 92450 93750 96750 128125 132225 134375 138675 140625 151618 153750 158670 161250 166410 220375 227427 230625 231125 241875 256250 264450 268750 277350 281250 379045 384375 396675 403125 416025 440750 454854 461250 462250 483750 640625 661125 671875 682281 693375 758090 768750 793350 806250 832050 1101875 1137135 1153125 1155625 1209375 1281250 1322250 1343750 1364562 1386750 1895225 1921875 1983375 2015625 2080125 2203750 2274270 2306250 2311250 2418750 3305625 3411405 3466875 3790450 3843750 3966750 4031250 4160250 5509375 5685675 5765625 5778125 6046875 6611250 6822810 6933750 9476125 9916875 10400625 11018750 11371350 11531250 11556250 12093750 16528125 17057025 17334375 18952250 19833750 20801250 27546875 28428375 28890625 33056250 34114050 34668750 47380625 49584375 52003125 55093750 56856750 57781250 82640625 85285125 86671875 94761250 99168750 104006250 142141875 165281250 170570250 173343750 236903125 247921875 260015625 284283750 426425625 473806250 495843750 520031250 710709375 852851250 1184515625 1421418750 2132128125 2369031250 3553546875 4264256250 7107093750 10660640625 21321281250
• Sum of all divisors σ(n): 60560435754
• Sum of proper divisors (its aliquot sum) s(n): 39239154504
• 21321281250 is an abundant number, because the sum of its proper divisors (39239154504) is greater than itself. Its abundance is 17917873254

Bases of 21321281250

• Binary: 10011110110110110001110111011100010₂
• Hexadecimal: 0x4F6D8EEE2
• Base-36: 9SM51WI

Squares and roots of 21321281250

• 21321281250 squared (21321281250²) is 454597034141601562500
• 21321281250 cubed (21321281250³) is 9692591220348939239501953125000
• The square root of 21321281250 is 146018.0853524659
• The cube root of 21321281250 is 2772.9227210285

Scales and comparisons

• 21,321,281,250 seconds is equal to 677 years, 49 weeks, 3 days, 2 hours, 7 minutes, 30 seconds.
• To count from 1 to 21,321,281,250 would take you about one thousand, three hundred fifty-five 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 21321281250 cubic inches would be around 231.1 feet tall.

Recreational maths with 21321281250

• 21321281250 backwards is 05218212312
• The number of decimal digits it has is: 11
• The sum of 21321281250's digits is 27
• More coming soon!