20387805438

Names of 20387805438

• Cardinal: 20387805438 can be written as Twenty billion, three hundred eighty-seven million, eight hundred five thousand, four hundred thirty-eight.

Scientific notation

• Scientific notation: 2.0387805438 × 10¹⁰

Factors of 20387805438

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 109

Divisors of 20387805438

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 6 7 11 13 14 21 22 26 33 39 42 49 66 73 77 78 91 98 143 146 147 154 169 182 219 231 273 286 294 338 343 429 438 462 507 511 539 546 637 686 803 858 949 1001 1014 1022 1029 1078 1183 1274 1533 1606 1617 1859 1898 1911 2002 2058 2366 2409 2847 3003 3066 3234 3549 3577 3718 3773 3822 4459 4818 5329 5577 5621 5694 6006 6643 7007 7098 7154 7546 8281 8918 10439 10658 10731 11154 11242 11319 12337 13013 13286 13377 14014 15987 16562 16863 19929 20878 21021 21462 22638 24674 24843 25039 26026 26754 31317 31974 33726 37011 37303 39039 39347 39858 42042 46501 49049 49686 50078 57967 58619 62634 69277 73073 74022 74606 75117 78078 78694 86359 91091 93002 98098 111909 115934 117238 118041 135707 138554 139503 146146 147147 150234 172718 173901 175857 182182 207831 219219 223818 236082 259077 261121 271414 273273 275429 279006 294294 325507 347802 351714 407121 410333 415662 438438 484939 511511 518154 522242 546546 550858 604513 637637 651014 762047 783363 814242 820666 826287 900601 949949 969878 976521 1023022 1209026 1230999 1275274 1454817 1524094 1534533 1566726 1652574 1801202 1813539 1827847 1899898 1912911 1953042 2286141 2461998 2701803 2849847 2872331 2909634 3069066 3394573 3580577 3627078 3655694 3825822 4231591 4572282 5334329 5403606 5483541 5699694 5744662 6304207 6649643 6789146 7161154 8463182 8616993 9906611 10183719 10668658 10741731 10967082 12608414 12694773 13299286 16002987 17233986 18912621 19813222 19948929 20106317 20367438 21483462 23762011 25389546 29719833 32005974 37340303 37825242 39897858 40212634 44129449 46547501 47524022 59439666 60318951 69346277 71286033 74680606 88258898 93095002 112020909 120637902 132388347 138692554 139642503 142572066 208038831 224041818 261382121 264776694 279285006 308906143 416077662 485423939 522764242 617812286 784146363 926718429 970847878 1456271817 1568292726 1853436858 2912543634 3397967573 6795935146 10193902719 20387805438
• Sum of all divisors σ(n): 56951942400
• Sum of proper divisors (its aliquot sum) s(n): 36564136962
• 20387805438 is an abundant number, because the sum of its proper divisors (36564136962) is greater than itself. Its abundance is 16176331524

Bases of 20387805438

• Binary: 10010111111001101010011100011111110₂
• Hexadecimal: 0x4BF3538FE
• Base-36: 9D6DFCU

Squares and roots of 20387805438

• 20387805438 squared (20387805438²) is 415662610577742371844
• 20387805438 cubed (20387805438³) is 8474448432310172250444121287672
• The square root of 20387805438 is 142785.8726835397
• The cube root of 20387805438 is 2731.8498573583

Scales and comparisons

• 20,387,805,438 seconds is equal to 648 years, 13 weeks, 6 days, 23 hours, 17 minutes, 18 seconds.
• To count from 1 to 20,387,805,438 would take you about one thousand, two hundred ninety-six 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 20387805438 cubic inches would be around 227.7 feet tall.

Recreational maths with 20387805438

• 20387805438 backwards is 83450878302
• The number of decimal digits it has is: 11
• The sum of 20387805438's digits is 48
• More coming soon!