18420197840

Names of 18420197840

• Cardinal: 18420197840 can be written as Eighteen billion, four hundred twenty million, one hundred ninety-seven thousand, eight hundred forty.

Scientific notation

• Scientific notation: 1.842019784 × 10¹⁰

Factors of 18420197840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2852

Divisors of 18420197840

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 4 5 8 10 11 16 20 22 40 44 55 80 88 110 121 176 220 242 440 484 605 880 968 1093 1210 1741 1936 2186 2420 3482 4372 4840 5465 6964 8705 8744 9680 10930 12023 13928 17410 17488 19151 21860 24046 27856 34820 38302 43720 48092 60115 69640 76604 87440 95755 96184 120230 132253 139280 153208 191510 192368 210661 240460 264506 306416 383020 421322 480920 529012 661265 766040 842644 961840 1053305 1058024 1322530 1532080 1685288 1902913 2106610 2116048 2645060 3370576 3805826 4213220 5290120 7611652 8426440 9514565 10580240 15223304 16852880 19029130 20932043 30446608 38058260 41864086 76116520 83728172 104660215 152233040 167456344 209320430 230252473 334912688 418640860 460504946 837281720 921009892 1151262365 1674563440 1842019784 2302524730 3684039568 4605049460 9210098920 18420197840
• Sum of all divisors σ(n): 47144394024
• Sum of proper divisors (its aliquot sum) s(n): 28724196184
• 18420197840 is an abundant number, because the sum of its proper divisors (28724196184) is greater than itself. Its abundance is 10303998344

Bases of 18420197840

• Binary: 10001001001111011011110100111010000₂
• Hexadecimal: 0x449EDE9D0
• Base-36: 8GMWRM8

Squares and roots of 18420197840

• 18420197840 squared (18420197840²) is 339303688464740665600
• 18420197840 cubed (18420197840³) is 6250041069362248924645282304000
• The square root of 18420197840 is 135721.0294685389
• The cube root of 18420197840 is 2640.9778784815

Scales and comparisons

• 18,420,197,840 seconds is equal to 585 years, 36 weeks, 4 days, 17 hours, 37 minutes, 20 seconds.
• To count from 1 to 18,420,197,840 would take you about one thousand, one hundred seventy-one 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 18420197840 cubic inches would be around 220.1 feet tall.

Recreational maths with 18420197840

• 18420197840 backwards is 04879102481
• 18420197840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18420197840's digits is 44
• More coming soon!