21026415872

Names of 21026415872

• Cardinal: 21026415872 can be written as Twenty-one billion, twenty-six million, four hundred fifteen thousand, eight hundred seventy-two.

Scientific notation

• Scientific notation: 2.1026415872 × 10¹⁰

Factors of 21026415872

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 1999

Divisors of 21026415872

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 4 7 8 11 14 16 22 28 32 44 49 56 64 77 88 98 112 121 128 154 176 196 224 242 256 308 343 352 392 448 484 539 616 686 704 784 847 896 968 1078 1232 1372 1408 1568 1694 1792 1936 1979 2156 2464 2744 2816 3136 3388 3773 3872 3958 4312 4928 5488 5929 6272 6776 7546 7744 7916 8624 9856 10976 11858 12544 13552 13853 15092 15488 15832 17248 19712 21769 21952 23716 27104 27706 30184 30976 31664 34496 41503 43538 43904 47432 54208 55412 60368 63328 68992 83006 87076 87808 94864 96971 108416 110824 120736 126656 137984 152383 166012 174152 189728 193942 216832 221648 239459 241472 253312 304766 332024 348304 379456 387884 443296 478918 482944 506624 609532 664048 678797 696608 758912 775768 886592 957836 965888 1066681 1219064 1328096 1357594 1393216 1517824 1551536 1676213 1773184 1915672 2133362 2438128 2656192 2715188 2786432 3103072 3352426 3546368 3831344 4266724 4876256 5312384 5430376 5572864 6206144 6704852 7466767 7662688 8533448 9752512 10624768 10860752 11733491 12412288 13409704 14933534 15325376 17066896 19505024 21721504 23466982 24824576 26819408 29867068 30650752 34133792 39010048 43443008 46933964 53638816 59734136 61301504 68267584 82134437 86886016 93867928 107277632 119468272 136535168 164268874 173772032 187735856 214555264 238936544 273070336 328537748 375471712 429110528 477873088 657075496 750943424 955746176 1314150992 1501886848 1911492352 2628301984 3003773696 5256603968 10513207936 21026415872
• Sum of all divisors σ(n): 53826696000
• Sum of proper divisors (its aliquot sum) s(n): 32800280128
• 21026415872 is an abundant number, because the sum of its proper divisors (32800280128) is greater than itself. Its abundance is 11773864256

Bases of 21026415872

• Binary: 10011100101010001011010010100000000₂
• Hexadecimal: 0x4E545A500
• Base-36: 9NQL2BK

Squares and roots of 21026415872

• 21026415872 squared (21026415872²) is 442110164422293520384
• 21026415872 cubed (21026415872³) is 9295992178381442187644893134848
• The square root of 21026415872 is 145004.8822350475
• The cube root of 21026415872 is 2760.0805073485

Scales and comparisons

• 21,026,415,872 seconds is equal to 668 years, 29 weeks, 6 days, 7 hours, 4 minutes, 32 seconds.
• To count from 1 to 21,026,415,872 would take you about one thousand, three hundred thirty-seven 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 21026415872 cubic inches would be around 230 feet tall.

Recreational maths with 21026415872

• 21026415872 backwards is 27851462012
• The number of decimal digits it has is: 11
• The sum of 21026415872's digits is 38
• More coming soon!