21217727440

Names of 21217727440

• Cardinal: 21217727440 can be written as Twenty-one billion, two hundred seventeen million, seven hundred twenty-seven thousand, four hundred forty.

Scientific notation

• Scientific notation: 2.121772744 × 10¹⁰

Factors of 21217727440

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 640

Divisors of 21217727440

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 4 5 7 8 10 13 14 16 20 26 28 35 40 52 53 56 65 70 80 91 104 106 112 127 130 140 182 208 212 254 260 265 280 364 371 424 433 455 508 520 530 560 635 689 728 742 848 866 889 910 1016 1040 1060 1270 1378 1456 1484 1651 1732 1778 1820 1855 2032 2120 2165 2540 2756 2968 3031 3302 3445 3464 3556 3640 3710 4240 4330 4445 4823 5080 5512 5629 5936 6062 6604 6731 6890 6928 7112 7280 7420 8255 8660 8890 9646 10160 11024 11258 11557 12124 13208 13462 13780 14224 14840 15155 16510 17320 17780 19292 22516 22949 23114 24115 24248 26416 26924 27560 28145 29680 30310 33020 33655 34640 35560 38584 39403 45032 45898 46228 47117 48230 48496 53848 54991 55120 56290 57785 60620 66040 67310 71120 77168 78806 87503 90064 91796 92456 94234 96460 107696 109982 112580 114745 115570 121240 132080 134620 157612 160643 175006 183592 184912 188468 192920 197015 219964 225160 229490 231140 235585 242480 269240 274955 298337 315224 321286 350012 367184 376936 384937 385840 394030 437515 439928 450320 458980 462280 471170 538480 549910 596674 612521 630448 642572 700024 714883 753872 769874 788060 803215 875030 879856 917960 924560 942340 1099820 1193348 1225042 1285144 1400048 1429766 1491685 1539748 1576120 1606430 1750060 1835920 1884680 1924685 2088359 2199640 2386696 2450084 2570288 2859532 2914523 2983370 3062605 3079496 3152240 3212860 3500120 3574415 3769360 3849370 4176718 4399280 4773392 4900168 5004181 5719064 5829046 5966740 6125210 6158992 6425720 7000240 7148830 7698740 8353436 9800336 10008362 10441795 11438128 11658092 11933480 12250420 12851440 14297660 14572615 15397480 16706872 20016724 20401661 20883590 23316184 23866960 24500840 25020905 28595320 29145230 30794960 33413744 37888799 40033448 40803322 41767180 46632368 49001680 50041810 57190640 58290460 75777598 80066896 81606644 83534360 100083620 102008305 116580920 151555196 163213288 167068720 189443995 200167240 204016610 233161840 265221593 303110392 326426576 378887990 400334480 408033220 530443186 606220784 757775980 816066440 1060886372 1326107965 1515551960 1632132880 2121772744 2652215930 3031103920 4243545488 5304431860 10608863720 21217727440
• Sum of all divisors σ(n): 62492000256
• Sum of proper divisors (its aliquot sum) s(n): 41274272816
• 21217727440 is an abundant number, because the sum of its proper divisors (41274272816) is greater than itself. Its abundance is 20056545376

Bases of 21217727440

• Binary: 10011110000101011001101001111010000₂
• Hexadecimal: 0x4F0ACD3D0
• Base-36: 9QWHJ9S

Squares and roots of 21217727440

• 21217727440 squared (21217727440²) is 450191957718128953600
• 21217727440 cubed (21217727440³) is 9552050254543264484257206784000
• The square root of 21217727440 is 145663.0613436363
• The cube root of 21217727440 is 2768.4262300689

Scales and comparisons

• 21,217,727,440 seconds is equal to 674 years, 34 weeks, 1 day, 13 hours, 10 minutes, 40 seconds.
• To count from 1 to 21,217,727,440 would take you about one thousand, three hundred forty-nine 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 21217727440 cubic inches would be around 230.7 feet tall.

Recreational maths with 21217727440

• 21217727440 backwards is 04472771212
• The number of decimal digits it has is: 11
• The sum of 21217727440's digits is 37
• More coming soon!