21420000

Names of 21420000

• Cardinal: 21420000 can be written as Twenty-one million, four hundred twenty thousand.

Scientific notation

• Scientific notation: 2.142 × 10⁷

Factors of 21420000

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 34

Divisors of 21420000

• Number of divisors d(n): 360
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 16 17 18 20 21 24 25 28 30 32 34 35 36 40 42 45 48 50 51 56 60 63 68 70 72 75 80 84 85 90 96 100 102 105 112 119 120 125 126 136 140 144 150 153 160 168 170 175 180 200 204 210 224 225 238 240 250 252 255 272 280 288 300 306 315 336 340 350 357 360 375 400 408 420 425 450 476 480 500 504 510 525 544 560 595 600 612 625 630 672 680 700 714 720 750 765 800 816 840 850 875 900 952 1000 1008 1020 1050 1071 1120 1125 1190 1200 1224 1250 1260 1275 1360 1400 1428 1440 1500 1530 1575 1632 1680 1700 1750 1785 1800 1875 1904 2000 2016 2040 2100 2125 2142 2250 2380 2400 2448 2500 2520 2550 2625 2720 2800 2856 2975 3000 3060 3150 3360 3400 3500 3570 3600 3750 3808 3825 4000 4080 4200 4250 4284 4375 4500 4760 4896 5000 5040 5100 5250 5355 5600 5625 5712 5950 6000 6120 6300 6375 6800 7000 7140 7200 7500 7650 7875 8160 8400 8500 8568 8750 8925 9000 9520 10000 10080 10200 10500 10625 10710 11250 11424 11900 12000 12240 12600 12750 13125 13600 14000 14280 14875 15000 15300 15750 16800 17000 17136 17500 17850 18000 19040 19125 20000 20400 21000 21250 21420 22500 23800 24480 25200 25500 26250 26775 28000 28560 29750 30000 30600 31500 31875 34000 34272 35000 35700 36000 38250 39375 40800 42000 42500 42840 44625 45000 47600 50400 51000 52500 53550 57120 59500 60000 61200 63000 63750 68000 70000 71400 74375 76500 78750 84000 85000 85680 89250 90000 95200 95625 102000 105000 107100 119000 122400 126000 127500 133875 140000 142800 148750 153000 157500 170000 171360 178500 180000 191250 204000 210000 214200 223125 238000 252000 255000 267750 285600 297500 306000 315000 340000 357000 382500 420000 428400 446250 476000 510000 535500 595000 612000 630000 669375 714000 765000 856800 892500 1020000 1071000 1190000 1260000 1338750 1428000 1530000 1785000 2142000 2380000 2677500 3060000 3570000 4284000 5355000 7140000 10710000 21420000
• Sum of all divisors σ(n): 92108016
• Sum of proper divisors (its aliquot sum) s(n): 70688016
• 21420000 is an abundant number, because the sum of its proper divisors (70688016) is greater than itself. Its abundance is 49268016

Bases of 21420000

• Binary: 1010001101101011111100000₂
• Hexadecimal: 0x146D7E0
• Base-36: CR3S0

Squares and roots of 21420000

• 21420000 squared (21420000²) is 458816400000000
• 21420000 cubed (21420000³) is 9827847288000000000000
• The square root of 21420000 is 4628.1745861625
• The cube root of 21420000 is 277.7195729899

Scales and comparisons

• 21,420,000 seconds is equal to 35 weeks, 2 days, 22 hours.
• To count from 1 to 21,420,000 would take you about twenty-one 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 21420000 cubic inches would be around 23.1 feet tall.

Recreational maths with 21420000

• 21420000 backwards is 00002412
• 21420000 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21420000's digits is 9
• More coming soon!