19904940

Names of 19904940

• Cardinal: 19904940 can be written as Nineteen million, nine hundred four thousand, nine hundred forty.

Scientific notation

• Scientific notation: 1.990494 × 10⁷

Factors of 19904940

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1138

Divisors of 19904940

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 4 5 6 9 10 11 12 15 18 20 22 27 30 33 36 44 45 54 55 60 66 81 90 99 108 110 132 135 162 165 180 198 220 270 297 324 330 396 405 495 540 594 660 810 891 990 1117 1188 1485 1620 1782 1980 2234 2970 3351 3564 4455 4468 5585 5940 6702 8910 10053 11170 12287 13404 16755 17820 20106 22340 24574 30159 33510 36861 40212 49148 50265 60318 61435 67020 73722 90477 100530 110583 120636 122870 147444 150795 180954 184305 201060 221166 245740 301590 331749 361908 368610 442332 452385 552915 603180 663498 737220 904770 995247 1105830 1326996 1658745 1809540 1990494 2211660 3317490 3980988 4976235 6634980 9952470 19904940
• Sum of all divisors σ(n): 68180112
• Sum of proper divisors (its aliquot sum) s(n): 48275172
• 19904940 is an abundant number, because the sum of its proper divisors (48275172) is greater than itself. Its abundance is 28370232

Bases of 19904940

• Binary: 1001011111011100110101100₂
• Hexadecimal: 0x12FB9AC
• Base-36: BUMR0

Squares and roots of 19904940

• 19904940 squared (19904940²) is 396206636403600
• 19904940 cubed (19904940³) is 7886469325215473784000
• The square root of 19904940 is 4461.4952650429
• The cube root of 19904940 is 271.0110242743

Scales and comparisons

• 19,904,940 seconds is equal to 32 weeks, 6 days, 9 hours, 9 minutes.
• To count from 1 to 19,904,940 would take you about forty-nine 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 19904940 cubic inches would be around 22.6 feet tall.

Recreational maths with 19904940

• 19904940 backwards is 04940991
• 19904940 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 19904940's digits is 36
• More coming soon!