21256772320

Names of 21256772320

• Cardinal: 21256772320 can be written as Twenty-one billion, two hundred fifty-six million, seven hundred seventy-two thousand, three hundred twenty.

Scientific notation

• Scientific notation: 2.125677232 × 10¹⁰

Factors of 21256772320

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 755

Divisors of 21256772320

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 32 35 37 40 49 56 70 74 80 98 112 127 140 148 160 185 196 224 245 254 259 280 296 370 392 490 508 518 560 577 592 635 740 784 889 980 1016 1036 1120 1154 1184 1270 1295 1480 1568 1778 1813 1960 2032 2072 2308 2540 2590 2885 2960 3556 3626 3920 4039 4064 4144 4445 4616 4699 5080 5180 5770 5920 6223 7112 7252 7840 8078 8288 8890 9065 9232 9398 10160 10360 11540 12446 14224 14504 16156 17780 18130 18464 18796 20195 20320 20720 21349 23080 23495 24892 28273 28448 29008 31115 32312 32893 35560 36260 37592 40390 41440 42698 46160 46990 49784 56546 58016 62230 64624 65786 71120 72520 73279 75184 80780 85396 92320 93980 99568 106745 113092 124460 129248 131572 141365 142240 145040 146558 149443 150368 161560 164465 170792 187960 199136 213490 226184 230251 248920 263144 282730 290080 293116 298886 323120 328930 341584 366395 375920 426980 452368 460502 497840 512953 526288 565460 586232 597772 646240 657860 683168 732790 747215 751840 853960 904736 921004 995680 1025906 1046101 1052576 1130920 1151255 1172464 1195544 1315720 1465580 1494430 1707920 1842008 2051812 2092202 2261840 2302510 2344928 2391088 2564765 2631440 2711323 2931160 2988860 3415840 3590671 3684016 4103624 4184404 4523680 4605020 4782176 5129530 5230505 5262880 5422646 5862320 5977720 7181342 7368032 8207248 8368808 9210040 10259060 10461010 10845292 11724640 11955440 13556615 14362684 16414496 16737616 17953355 18420080 18979261 20518120 20922020 21690584 23910880 27113230 28725368 33475232 35906710 36840160 37958522 41036240 41844040 43381168 54226460 57450736 71813420 75917044 82072480 83688080 86762336 94896305 108452920 114901472 132854827 143626840 151834088 167376160 189792610 216905840 265709654 287253680 303668176 379585220 433811680 531419308 574507360 607336352 664274135 759170440 1062838616 1328548270 1518340880 2125677232 2657096540 3036681760 4251354464 5314193080 10628386160 21256772320
• Sum of all divisors σ(n): 60574252032
• Sum of proper divisors (its aliquot sum) s(n): 39317479712
• 21256772320 is an abundant number, because the sum of its proper divisors (39317479712) is greater than itself. Its abundance is 18060707392

Bases of 21256772320

• Binary: 10011110011000000001001101011100000₂
• Hexadecimal: 0x4F3009AE0
• Base-36: 9RJQEHS

Squares and roots of 21256772320

• 21256772320 squared (21256772320²) is 451850369464318182400
• 21256772320 cubed (21256772320³) is 9604880426410891967313031168000
• The square root of 21256772320 is 145797.0243866451
• The cube root of 21256772320 is 2770.1233429157

Scales and comparisons

• 21,256,772,320 seconds is equal to 675 years, 46 weeks, 5 days, 10 hours, 58 minutes, 40 seconds.
• To count from 1 to 21,256,772,320 would take you about one thousand, three hundred fifty-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 21256772320 cubic inches would be around 230.8 feet tall.

Recreational maths with 21256772320

• 21256772320 backwards is 02327765212
• 21256772320 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21256772320's digits is 37
• More coming soon!