21424260

Names of 21424260

• Cardinal: 21424260 can be written as Twenty-one million, four hundred twenty-four thousand, two hundred sixty.

Scientific notation

• Scientific notation: 2.142426 × 10⁷

Factors of 21424260

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 261

Divisors of 21424260

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 10 11 12 13 15 20 22 26 30 33 39 44 52 55 60 65 66 78 110 121 130 132 143 156 165 195 220 227 242 260 286 330 363 390 429 454 484 572 605 660 681 715 726 780 858 908 1135 1210 1362 1430 1452 1573 1716 1815 2145 2270 2420 2497 2724 2860 2951 3146 3405 3630 4290 4540 4719 4994 5902 6292 6810 7260 7491 7865 8580 8853 9438 9988 11804 12485 13620 14755 14982 15730 17706 18876 23595 24970 27467 29510 29964 31460 32461 35412 37455 44265 47190 49940 54934 59020 64922 74910 82401 88530 94380 97383 109868 129844 137335 149820 162305 164802 177060 194766 274670 324610 329604 357071 389532 412005 486915 549340 649220 714142 824010 973830 1071213 1428284 1648020 1785355 1947660 2142426 3570710 4284852 5356065 7141420 10712130 21424260
• Sum of all divisors σ(n): 71322048
• Sum of proper divisors (its aliquot sum) s(n): 49897788
• 21424260 is an abundant number, because the sum of its proper divisors (49897788) is greater than itself. Its abundance is 28473528

Bases of 21424260

• Binary: 1010001101110100010000100₂
• Hexadecimal: 0x146E884
• Base-36: CR72C

Squares and roots of 21424260

• 21424260 squared (21424260²) is 458998916547600
• 21424260 cubed (21424260³) is 9833712127834084776000
• The square root of 21424260 is 4628.6347879261
• The cube root of 21424260 is 277.7379826843

Scales and comparisons

• 21,424,260 seconds is equal to 35 weeks, 2 days, 23 hours, 11 minutes.
• To count from 1 to 21,424,260 would take you about twenty-two hours!

  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 21424260 cubic inches would be around 23.1 feet tall.

Recreational maths with 21424260

• 21424260 backwards is 06242412
• The number of decimal digits it has is: 8
• The sum of 21424260's digits is 21
• More coming soon!