21345478000

Names of 21345478000

• Cardinal: 21345478000 can be written as Twenty-one billion, three hundred forty-five million, four hundred seventy-eight thousand.

Scientific notation

• Scientific notation: 2.1345478 × 10¹⁰

Factors of 21345478000

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 19826

Divisors of 21345478000

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 4 5 7 8 10 11 14 16 20 22 25 28 35 40 44 49 50 55 56 70 77 80 88 98 100 110 112 125 140 154 175 176 196 200 220 245 250 275 280 308 350 385 392 400 440 490 500 539 550 560 616 700 770 784 875 880 980 1000 1078 1100 1225 1232 1375 1400 1540 1750 1925 1960 2000 2156 2200 2450 2695 2750 2800 3080 3500 3850 3920 4312 4400 4900 5390 5500 6125 6160 7000 7700 8624 9625 9800 10780 11000 12250 13475 14000 15400 19250 19600 19801 21560 22000 24500 26950 30800 38500 39602 43120 49000 53900 67375 77000 79204 98000 99005 107800 134750 138607 154000 158408 198010 215600 217811 269500 277214 316816 396020 435622 495025 539000 554428 693035 792040 871244 970249 990050 1078000 1089055 1108856 1386070 1524677 1584080 1742488 1940498 1980100 2178110 2217712 2475125 2772140 3049354 3465175 3484976 3880996 3960200 4356220 4851245 4950250 5445275 5544280 6098708 6930350 7623385 7761992 7920400 8712440 9702490 9900500 10672739 10890550 11088560 12197416 13860700 15246770 15523984 17325875 17424880 19404980 19801000 21345478 21781100 24256225 24394832 27226375 27721400 30493540 34651750 38116925 38809960 39602000 42690956 43562200 48512450 53363695 54452750 55442800 60987080 69303500 76233850 77619920 85381912 87124400 97024900 106727390 108905500 121281125 121974160 138607000 152467700 170763824 190584625 194049800 213454780 217811000 242562250 266818475 277214000 304935400 381169250 388099600 426909560 435622000 485124500 533636950 609870800 762338500 853819120 970249000 1067273900 1334092375 1524677000 1940498000 2134547800 2668184750 3049354000 4269095600 5336369500 10672739000 21345478000
• Sum of all divisors σ(n): 65501530848
• Sum of proper divisors (its aliquot sum) s(n): 44156052848
• 21345478000 is an abundant number, because the sum of its proper divisors (44156052848) is greater than itself. Its abundance is 22810574848

Bases of 21345478000

• Binary: 10011111000010010100010010101110000₂
• Hexadecimal: 0x4F84A2570
• Base-36: 9T0JO8G

Squares and roots of 21345478000

• 21345478000 squared (21345478000²) is 455629431048484000000
• 21345478000 cubed (21345478000³) is 9725627996597932155352000000000
• The square root of 21345478000 is 146100.9171771347
• The cube root of 21345478000 is 2773.9712876625

Scales and comparisons

• 21,345,478,000 seconds is equal to 678 years, 37 weeks, 3 days, 3 hours, 26 minutes, 40 seconds.
• To count from 1 to 21,345,478,000 would take you about one thousand, three hundred fifty-seven years!

  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 21345478000 cubic inches would be around 231.2 feet tall.

Recreational maths with 21345478000

• 21345478000 backwards is 00087454312
• The number of decimal digits it has is: 11
• The sum of 21345478000's digits is 34
• More coming soon!