22121820

Names of 22121820

• Cardinal: 22121820 can be written as Twenty-two million, one hundred twenty-one thousand, eight hundred twenty.

Scientific notation

• Scientific notation: 2.212182 × 10⁷

Factors of 22121820

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 295

Divisors of 22121820

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 28 30 35 36 42 45 60 63 70 84 90 97 105 126 140 180 181 194 210 252 291 315 362 388 420 485 543 582 630 679 724 873 905 970 1086 1164 1260 1267 1358 1455 1629 1746 1810 1940 2037 2172 2534 2715 2716 2910 3258 3395 3492 3620 3801 4074 4365 5068 5430 5820 6111 6335 6516 6790 7602 8145 8148 8730 10185 10860 11403 12222 12670 13580 15204 16290 17460 17557 19005 20370 22806 24444 25340 30555 32580 35114 38010 40740 45612 52671 57015 61110 70228 76020 87785 105342 114030 122220 122899 158013 175570 210684 228060 245798 263355 316026 351140 368697 491596 526710 614495 632052 737394 790065 1053420 1106091 1228990 1474788 1580130 1843485 2212182 2457980 3160260 3686970 4424364 5530455 7373940 11060910 22121820
• Sum of all divisors σ(n): 77907648
• Sum of proper divisors (its aliquot sum) s(n): 55785828
• 22121820 is an abundant number, because the sum of its proper divisors (55785828) is greater than itself. Its abundance is 33664008

Bases of 22121820

• Binary: 1010100011000110101011100₂
• Hexadecimal: 0x1518D5C
• Base-36: D65B0

Squares and roots of 22121820

• 22121820 squared (22121820²) is 489374920112400
• 22121820 cubed (22121820³) is 10825863895240892568000
• The square root of 22121820 is 4703.3838882235
• The cube root of 22121820 is 280.7201699189

Scales and comparisons

• 22,121,820 seconds is equal to 36 weeks, 4 days, 57 minutes.
• To count from 1 to 22,121,820 would take you about two weeks!

  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 22121820 cubic inches would be around 23.4 feet tall.

Recreational maths with 22121820

• 22121820 backwards is 02812122
• 22121820 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 22121820's digits is 18
• More coming soon!