20802678390

Names of 20802678390

• Cardinal: 20802678390 can be written as Twenty billion, eight hundred two million, six hundred seventy-eight thousand, three hundred ninety.

Scientific notation

• Scientific notation: 2.080267839 × 10¹⁰

Factors of 20802678390

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 3893

Divisors of 20802678390

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 5 6 9 10 13 15 18 19 26 27 30 38 39 45 54 57 65 78 81 90 95 114 117 130 135 162 171 190 195 234 243 247 270 285 342 351 390 405 486 494 513 570 585 702 729 741 810 855 1026 1053 1170 1215 1235 1458 1482 1539 1710 1755 2106 2187 2223 2430 2470 2565 3078 3159 3510 3645 3705 3851 4374 4446 4617 5130 5265 6318 6669 7290 7410 7695 7702 9234 9477 10530 10935 11115 11553 13338 13851 15390 15795 18954 19255 20007 21870 22230 23085 23106 27702 28431 31590 33345 34659 38510 40014 41553 46170 47385 50063 56862 57765 60021 66690 69255 69318 73169 83106 94770 100035 100126 103977 115530 120042 138510 142155 146338 150189 173295 180063 200070 207765 207954 219507 250315 284310 300105 300378 311931 346590 360126 365845 415530 439014 450567 500630 519885 540189 600210 623862 658521 731690 750945 900315 901134 935793 951197 1039770 1080378 1097535 1317042 1351701 1501890 1559655 1800630 1871586 1902394 1975563 2195070 2252835 2700945 2703402 2807379 2853591 3119310 3292605 3951126 4055103 4505670 4678965 4755985 5401890 5614758 5707182 5926689 6585210 6758505 8110206 8422137 8560773 9357930 9511970 9877815 11853378 12165309 13517010 14036895 14267955 16844274 17121546 17780067 19755630 20275515 24330618 25682319 28073790 28535910 29633445 35560134 36495927 40551030 42110685 42803865 51364638 53340201 59266890 60826545 72991854 77046957 84221370 85607730 88900335 106680402 109487781 121653090 128411595 154093914 160020603 177800670 182479635 218975562 231140871 256823190 266701005 320041206 364959270 385234785 462281742 533402010 547438905 693422613 770469570 800103015 1094877810 1155704355 1386845226 1600206030 2080267839 2311408710 3467113065 4160535678 6934226130 10401339195 20802678390
• Sum of all divisors σ(n): 63678182400
• Sum of proper divisors (its aliquot sum) s(n): 42875504010
• 20802678390 is an abundant number, because the sum of its proper divisors (42875504010) is greater than itself. Its abundance is 22072825620

Bases of 20802678390

• Binary: 10011010111111011111010111001110110₂
• Hexadecimal: 0x4D7EFAE76
• Base-36: 9K1DLDI

Squares and roots of 20802678390

• 20802678390 squared (20802678390²) is 432751428197772992100
• 20802678390 cubed (20802678390³) is 9002388783611448868884310719000
• The square root of 20802678390 is 144231.3363662695
• The cube root of 20802678390 is 2750.2557730147

Scales and comparisons

• 20,802,678,390 seconds is equal to 661 years, 23 weeks, 6 days, 17 hours, 46 minutes, 30 seconds.
• To count from 1 to 20,802,678,390 would take you about one thousand, three hundred twenty-two 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 20802678390 cubic inches would be around 229.2 feet tall.

Recreational maths with 20802678390

• 20802678390 backwards is 09387620802
• 20802678390 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20802678390's digits is 45
• More coming soon!