18078241720

Names of 18078241720

• Cardinal: 18078241720 can be written as Eighteen billion, seventy-eight million, two hundred forty-one thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.807824172 × 10¹⁰

Factors of 18078241720

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 674

Divisors of 18078241720

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 4 5 7 8 10 11 14 20 22 28 35 40 44 55 56 70 77 88 110 113 127 140 154 220 226 254 280 308 385 409 440 452 508 565 616 635 770 791 818 889 904 1016 1130 1243 1270 1397 1540 1582 1636 1778 2045 2260 2486 2540 2794 2863 3080 3164 3272 3556 3955 4090 4445 4499 4520 4972 5080 5588 5726 6215 6328 6985 7112 7910 8180 8701 8890 8998 9779 9944 11176 11452 12430 13970 14315 14351 15820 16360 17402 17780 17996 19558 22495 22904 24860 27940 28630 28702 31493 31640 34804 35560 35992 39116 43505 44990 46217 48895 49720 51943 55880 57260 57404 62986 69608 71755 78232 87010 89980 92434 97790 100457 103886 114520 114808 125972 143510 157465 157861 174020 179960 184868 195580 200914 207772 231085 251944 259715 287020 314930 315722 323519 348040 363601 369736 391160 401828 415544 462170 502285 508387 519430 571373 574040 629860 631444 647038 727202 789305 803656 924340 1004570 1016774 1038860 1105027 1142746 1259720 1262888 1294076 1454404 1578610 1617595 1818005 1848680 2009140 2033548 2077720 2210054 2285492 2541935 2588152 2856865 2908808 3157220 3235190 3558709 3636010 3999611 4018280 4067096 4420108 4570984 5083870 5525135 5713730 5869559 6314440 6470380 7117418 7272020 7999222 8840216 10167740 11050270 11427460 11739118 12940760 14234836 14544040 15998444 17793545 19998055 20335480 22100540 22854920 23478236 28469672 29347795 31996888 35587090 39996110 41086913 44201080 46956472 58695590 64565149 71174180 79992220 82173826 117391180 129130298 142348360 159984440 164347652 205434565 234782360 258260596 322825745 328695304 410869130 451956043 516521192 645651490 821738260 903912086 1291302980 1643476520 1807824172 2259780215 2582605960 3615648344 4519560430 9039120860 18078241720
• Sum of all divisors σ(n): 51690700800
• Sum of proper divisors (its aliquot sum) s(n): 33612459080
• 18078241720 is an abundant number, because the sum of its proper divisors (33612459080) is greater than itself. Its abundance is 15534217360

Bases of 18078241720

• Binary: 10000110101100011000001001110111000₂
• Hexadecimal: 0x4358C13B8
• Base-36: 8AZBGL4

Squares and roots of 18078241720

• 18078241720 squared (18078241720²) is 326822823686748558400
• 18078241720 cubed (18078241720³) is 5908382006221981999616736448000
• The square root of 18078241720 is 134455.3521433789
• The cube root of 18078241720 is 2624.5331521097

Scales and comparisons

• 18,078,241,720 seconds is equal to 574 years, 43 weeks, 1 day, 21 hours, 48 minutes, 40 seconds.
• To count from 1 to 18,078,241,720 would take you about one thousand, one hundred forty-nine 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 18078241720 cubic inches would be around 218.7 feet tall.

Recreational maths with 18078241720

• 18078241720 backwards is 02714287081
• 18078241720 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18078241720's digits is 40
• More coming soon!