19478940

Names of 19478940

• Cardinal: 19478940 can be written as Nineteen million, four hundred seventy-eight thousand, nine hundred forty.

Scientific notation

• Scientific notation: 1.947894 × 10⁷

Factors of 19478940

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 153

Divisors of 19478940

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 10 12 13 15 17 20 26 30 34 39 51 52 60 65 68 78 85 102 113 130 156 169 170 195 204 221 226 255 260 338 339 340 390 442 452 507 510 565 663 676 678 780 845 884 1014 1020 1105 1130 1326 1356 1469 1690 1695 1921 2028 2210 2260 2535 2652 2873 2938 3315 3380 3390 3842 4407 4420 5070 5746 5763 5876 6630 6780 7345 7684 8619 8814 9605 10140 11492 11526 13260 14365 14690 17238 17628 19097 19210 22035 23052 24973 28730 28815 29380 34476 38194 38420 43095 44070 49946 57291 57460 57630 74919 76388 86190 88140 95485 99892 114582 115260 124865 149838 172380 190970 229164 249730 286455 299676 324649 374595 381940 499460 572910 649298 749190 973947 1145820 1298596 1498380 1623245 1947894 3246490 3895788 4869735 6492980 9739470 19478940
• Sum of all divisors σ(n): 63086688
• Sum of proper divisors (its aliquot sum) s(n): 43607748
• 19478940 is an abundant number, because the sum of its proper divisors (43607748) is greater than itself. Its abundance is 24128808

Bases of 19478940

• Binary: 1001010010011100110011100₂
• Hexadecimal: 0x129399C
• Base-36: BLI1O

Squares and roots of 19478940

• 19478940 squared (19478940²) is 379429103523600
• 19478940 cubed (19478940³) is 7390876741789992984000
• The square root of 19478940 is 4413.4952135467
• The cube root of 19478940 is 269.0636978731

Scales and comparisons

• 19,478,940 seconds is equal to 32 weeks, 1 day, 10 hours, 49 minutes.
• To count from 1 to 19,478,940 would take you about forty-eight 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 19478940 cubic inches would be around 22.4 feet tall.

Recreational maths with 19478940

• 19478940 backwards is 04987491
• The number of decimal digits it has is: 8
• The sum of 19478940's digits is 42
• More coming soon!