381890418

Names of 381890418

• Cardinal: 381890418 can be written as Three hundred eighty-one million, eight hundred ninety thousand, four hundred eighteen.

Scientific notation

• Scientific notation: 3.81890418 × 10⁸

Factors of 381890418

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 801

Divisors of 381890418

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 6 7 13 14 21 26 39 42 49 78 91 98 147 163 182 273 294 326 489 546 613 637 978 1141 1226 1274 1839 1911 2119 2282 3423 3678 3822 4238 4291 6357 6846 7969 7987 8582 12714 12873 14833 15938 15974 23907 23961 25746 29666 30037 44499 47814 47922 55783 60074 88998 90111 99919 103831 111566 167349 180222 199838 207662 299757 311493 334698 390481 599514 622986 699433 780962 1171443 1298947 1398866 2098299 2342886 2597894 3896841 4196598 4896031 7793682 9092629 9792062 14688093 18185258 27277887 29376186 54555774 63648403 127296806 190945209 381890418
• Sum of all divisors σ(n): 964264896
• Sum of proper divisors (its aliquot sum) s(n): 582374478
• 381890418 is an abundant number, because the sum of its proper divisors (582374478) is greater than itself. Its abundance is 200484060

Bases of 381890418

• Binary: 10110110000110010111101110010₂
• Hexadecimal: 0x16C32F72
• Base-36: 6BD8J6

Squares and roots of 381890418

• 381890418 squared (381890418²) is 145840291360214724
• 381890418 cubed (381890418³) is 55695009828794189518114632
• The square root of 381890418 is 19542.0167331829
• The cube root of 381890418 is 725.5147627621

Scales and comparisons

• 381,890,418 seconds is equal to 12 years, 7 weeks, 3 days, 40 minutes, 18 seconds.
• To count from 1 to 381,890,418 would take you about eighteen 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 381890418 cubic inches would be around 60.5 feet tall.

Recreational maths with 381890418

• 381890418 backwards is 814098183
• 381890418 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 381890418's digits is 42
• More coming soon!