21043800

Names of 21043800

• Cardinal: 21043800 can be written as Twenty-one million, forty-three thousand, eight hundred.

Scientific notation

• Scientific notation: 2.10438 × 10⁷

Factors of 21043800

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 443

Divisors of 21043800

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 18 20 24 25 27 30 36 40 45 50 54 60 72 75 81 90 100 108 120 135 150 162 180 200 216 225 243 270 300 324 360 405 433 450 486 540 600 648 675 810 866 900 972 1080 1215 1299 1350 1620 1732 1800 1944 2025 2165 2430 2598 2700 3240 3464 3897 4050 4330 4860 5196 5400 6075 6495 7794 8100 8660 9720 10392 10825 11691 12150 12990 15588 16200 17320 19485 21650 23382 24300 25980 31176 32475 35073 38970 43300 46764 48600 51960 58455 64950 70146 77940 86600 93528 97425 105219 116910 129900 140292 155880 175365 194850 210438 233820 259800 280584 292275 350730 389700 420876 467640 526095 584550 701460 779400 841752 876825 1052190 1169100 1402920 1753650 2104380 2338200 2630475 3507300 4208760 5260950 7014600 10521900 21043800
• Sum of all divisors σ(n): 73458840
• Sum of proper divisors (its aliquot sum) s(n): 52415040
• 21043800 is an abundant number, because the sum of its proper divisors (52415040) is greater than itself. Its abundance is 31371240

Bases of 21043800

• Binary: 1010000010001101001011000₂
• Hexadecimal: 0x1411A58
• Base-36: CJ1I0

Squares and roots of 21043800

• 21043800 squared (21043800²) is 442841518440000
• 21043800 cubed (21043800³) is 9319068345747672000000
• The square root of 21043800 is 4587.3521774549
• The cube root of 21043800 is 276.0840953571

Scales and comparisons

• 21,043,800 seconds is equal to 34 weeks, 5 days, 13 hours, 30 minutes.
• To count from 1 to 21,043,800 would take you about eight 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 21043800 cubic inches would be around 23 feet tall.

Recreational maths with 21043800

• 21043800 backwards is 00834012
• 21043800 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21043800's digits is 18
• More coming soon!