20805120

Names of 20805120

• Cardinal: 20805120 can be written as Twenty million, eight hundred five thousand, one hundred twenty.

Scientific notation

• Scientific notation: 2.080512 × 10⁷

Factors of 20805120

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 60

Divisors of 20805120

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 27 28 30 32 35 36 40 42 43 45 48 54 56 60 63 64 70 72 80 84 86 90 96 105 108 112 120 126 128 129 135 140 144 160 168 172 180 189 192 210 215 216 224 240 252 256 258 270 280 288 301 315 320 336 344 360 378 384 387 420 430 432 448 480 504 512 516 540 560 576 602 630 640 645 672 688 720 756 768 774 840 860 864 896 903 945 960 1008 1032 1080 1120 1152 1161 1204 1260 1280 1290 1344 1376 1440 1505 1512 1536 1548 1680 1720 1728 1792 1806 1890 1920 1935 2016 2064 2160 2240 2304 2322 2408 2520 2560 2580 2688 2709 2752 2880 3010 3024 3096 3360 3440 3456 3584 3612 3780 3840 3870 4032 4128 4320 4480 4515 4608 4644 4816 5040 5160 5376 5418 5504 5760 5805 6020 6048 6192 6720 6880 6912 7224 7560 7680 7740 8064 8127 8256 8640 8960 9030 9288 9632 10080 10320 10752 10836 11008 11520 11610 12040 12096 12384 13440 13545 13760 13824 14448 15120 15480 16128 16254 16512 17280 17920 18060 18576 19264 20160 20640 21672 22016 23040 23220 24080 24192 24768 26880 27090 27520 28896 30240 30960 32256 32508 33024 34560 36120 37152 38528 40320 40635 41280 43344 46440 48160 48384 49536 53760 54180 55040 57792 60480 61920 65016 66048 69120 72240 74304 77056 80640 81270 82560 86688 92880 96320 96768 99072 108360 110080 115584 120960 123840 130032 144480 148608 154112 161280 162540 165120 173376 185760 192640 198144 216720 231168 241920 247680 260064 288960 297216 325080 330240 346752 371520 385280 433440 462336 483840 495360 520128 577920 594432 650160 693504 743040 770560 866880 990720 1040256 1155840 1300320 1387008 1486080 1733760 2080512 2311680 2600640 2972160 3467520 4161024 5201280 6935040 10402560 20805120
• Sum of all divisors σ(n): 86423040
• Sum of proper divisors (its aliquot sum) s(n): 65617920
• 20805120 is an abundant number, because the sum of its proper divisors (65617920) is greater than itself. Its abundance is 44812800

Bases of 20805120

• Binary: 1001111010111011000000000₂
• Hexadecimal: 0x13D7600
• Base-36: CDXC0

Squares and roots of 20805120

• 20805120 squared (20805120²) is 432853018214400
• 20805120 cubed (20805120³) is 9005558986312777728000
• The square root of 20805120 is 4561.2629829907
• The cube root of 20805120 is 275.0363367961

Scales and comparisons

• 20,805,120 seconds is equal to 34 weeks, 2 days, 19 hours, 12 minutes.
• To count from 1 to 20,805,120 would take you about fifty-one 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 20805120 cubic inches would be around 22.9 feet tall.

Recreational maths with 20805120

• 20805120 backwards is 02150802
• 20805120 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 20805120's digits is 18
• More coming soon!