20400660

Names of 20400660

• Cardinal: 20400660 can be written as Twenty million, four hundred thousand, six hundred sixty.

Scientific notation

• Scientific notation: 2.040066 × 10⁷

Factors of 20400660

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 274

Divisors of 20400660

• Number of divisors d(n): 180
• Complete list of divisors:
  1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 27 28 30 35 36 42 45 49 54 60 63 70 81 84 90 98 105 108 126 135 140 147 162 180 189 196 210 245 252 257 270 294 315 324 378 405 420 441 490 514 540 567 588 630 735 756 771 810 882 945 980 1028 1134 1260 1285 1323 1470 1542 1620 1764 1799 1890 2205 2268 2313 2570 2646 2835 2940 3084 3598 3780 3855 3969 4410 4626 5140 5292 5397 5670 6615 6939 7196 7710 7938 8820 8995 9252 10794 11340 11565 12593 13230 13878 15420 15876 16191 17990 19845 20817 21588 23130 25186 26460 26985 27756 32382 34695 35980 37779 39690 41634 46260 48573 50372 53970 62965 64764 69390 75558 79380 80955 83268 97146 104085 107940 113337 125930 138780 145719 151116 161910 188895 194292 208170 226674 242865 251860 291438 323820 340011 377790 416340 453348 485730 566685 582876 680022 728595 755580 971460 1020033 1133370 1360044 1457190 1700055 2040066 2266740 2914380 3400110 4080132 5100165 6800220 10200330 20400660
• Sum of all divisors σ(n): 74735892
• Sum of proper divisors (its aliquot sum) s(n): 54335232
• 20400660 is an abundant number, because the sum of its proper divisors (54335232) is greater than itself. Its abundance is 33934572

Bases of 20400660

• Binary: 1001101110100101000010100₂
• Hexadecimal: 0x1374A14
• Base-36: C5990

Squares and roots of 20400660

• 20400660 squared (20400660²) is 416186928435600
• 20400660 cubed (20400660³) is 8490488023459007496000
• The square root of 20400660 is 4516.7089788917
• The cube root of 20400660 is 273.2423882775

Scales and comparisons

• 20,400,660 seconds is equal to 33 weeks, 5 days, 2 hours, 51 minutes.
• To count from 1 to 20,400,660 would take you about fifty weeks!

  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 20400660 cubic inches would be around 22.8 feet tall.

Recreational maths with 20400660

• 20400660 backwards is 06600402
• 20400660 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 20400660's digits is 18
• More coming soon!