21050400

Names of 21050400

• Cardinal: 21050400 can be written as Twenty-one million, fifty thousand, four hundred.

Scientific notation

• Scientific notation: 2.10504 × 10⁷

Factors of 21050400

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 196

Divisors of 21050400

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 25 28 30 32 35 40 42 48 49 50 56 60 70 75 80 84 96 98 100 105 112 120 140 147 150 160 168 175 179 196 200 210 224 240 245 280 294 300 336 350 358 392 400 420 480 490 525 537 560 588 600 672 700 716 735 784 800 840 895 980 1050 1074 1120 1176 1200 1225 1253 1400 1432 1470 1568 1680 1790 1960 2100 2148 2352 2400 2450 2506 2685 2800 2864 2940 3360 3580 3675 3759 3920 4200 4296 4475 4704 4900 5012 5370 5600 5728 5880 6265 7160 7350 7518 7840 8400 8592 8771 8950 9800 10024 10740 11760 12530 13425 14320 14700 15036 16800 17184 17542 17900 18795 19600 20048 21480 23520 25060 26313 26850 28640 29400 30072 31325 35084 35800 37590 39200 40096 42960 43855 50120 52626 53700 58800 60144 62650 70168 71600 75180 85920 87710 93975 100240 105252 107400 117600 120288 125300 131565 140336 143200 150360 175420 187950 200480 210504 214800 219275 250600 263130 280672 300720 350840 375900 421008 429600 438550 501200 526260 601440 657825 701680 751800 842016 877100 1002400 1052520 1315650 1403360 1503600 1754200 2105040 2631300 3007200 3508400 4210080 5262600 7016800 10525200 21050400
• Sum of all divisors σ(n): 80151120
• Sum of proper divisors (its aliquot sum) s(n): 59100720
• 21050400 is an abundant number, because the sum of its proper divisors (59100720) is greater than itself. Its abundance is 38050320

Bases of 21050400

• Binary: 1010000010011010000100000₂
• Hexadecimal: 0x1413420
• Base-36: CJ6LC

Squares and roots of 21050400

• 21050400 squared (21050400²) is 443119340160000
• 21050400 cubed (21050400³) is 9327839358104064000000
• The square root of 21050400 is 4588.0714902887
• The cube root of 21050400 is 276.1129552361

Scales and comparisons

• 21,050,400 seconds is equal to 34 weeks, 5 days, 15 hours, 20 minutes.
• To count from 1 to 21,050,400 would take you about eleven 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 21050400 cubic inches would be around 23 feet tall.

Recreational maths with 21050400

• 21050400 backwards is 00405012
• 21050400 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21050400's digits is 12
• More coming soon!