21347340

Names of 21347340

• Cardinal: 21347340 can be written as Twenty-one million, three hundred forty-seven thousand, three hundred forty.

Scientific notation

• Scientific notation: 2.134734 × 10⁷

Factors of 21347340

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 207

Divisors of 21347340

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 49 53 60 70 84 98 105 106 137 140 147 159 196 210 212 245 265 274 294 318 371 411 420 490 530 548 588 636 685 735 742 795 822 959 980 1060 1113 1370 1470 1484 1590 1644 1855 1918 2055 2226 2597 2740 2877 2940 3180 3710 3836 4110 4452 4795 5194 5565 5754 6713 7261 7420 7791 8220 9590 10388 11130 11508 12985 13426 14385 14522 15582 19180 20139 21783 22260 25970 26852 28770 29044 31164 33565 36305 38955 40278 43566 50827 51940 57540 67130 72610 77910 80556 87132 100695 101654 108915 134260 145220 152481 155820 201390 203308 217830 254135 304962 355789 402780 435660 508270 609924 711578 762405 1016540 1067367 1423156 1524810 1778945 2134734 3049620 3557890 4269468 5336835 7115780 10673670 21347340
• Sum of all divisors σ(n): 71360352
• Sum of proper divisors (its aliquot sum) s(n): 50013012
• 21347340 is an abundant number, because the sum of its proper divisors (50013012) is greater than itself. Its abundance is 28665672

Bases of 21347340

• Binary: 1010001011011110000001100₂
• Hexadecimal: 0x145BC0C
• Base-36: CPJPO

Squares and roots of 21347340

• 21347340 squared (21347340²) is 455708925075600
• 21347340 cubed (21347340³) is 9728173364623358904000
• The square root of 21347340 is 4620.3181708623
• The cube root of 21347340 is 277.4051944627

Scales and comparisons

• 21,347,340 seconds is equal to 35 weeks, 2 days, 1 hour, 49 minutes.
• To count from 1 to 21,347,340 would take you about six days!

  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 21347340 cubic inches would be around 23.1 feet tall.

Recreational maths with 21347340

• 21347340 backwards is 04374312
• The number of decimal digits it has is: 8
• The sum of 21347340's digits is 24
• More coming soon!