21155094

Names of 21155094

• Cardinal: 21155094 can be written as Twenty-one million, one hundred fifty-five thousand and ninety-four.

Scientific notation

• Scientific notation: 2.1155094 × 10⁷

Factors of 21155094

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 132

Divisors of 21155094

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 6 9 18 19 27 29 38 54 57 58 79 81 87 114 158 162 171 174 237 243 261 342 474 486 513 522 551 711 783 1026 1102 1422 1501 1539 1566 1653 2133 2291 2349 3002 3078 3306 4266 4503 4582 4617 4698 4959 6399 6873 7047 9006 9234 9918 12798 13509 13746 14094 14877 19197 20619 27018 29754 38394 40527 41238 43529 44631 61857 81054 87058 89262 121581 123714 130587 133893 185571 243162 261174 267786 364743 371142 391761 556713 729486 783522 1113426 1175283 2350566 3525849 7051698 10577547 21155094
• Sum of all divisors σ(n): 52416000
• Sum of proper divisors (its aliquot sum) s(n): 31260906
• 21155094 is an abundant number, because the sum of its proper divisors (31260906) is greater than itself. Its abundance is 10105812

Bases of 21155094

• Binary: 1010000101100110100010110₂
• Hexadecimal: 0x142CD16
• Base-36: CLFDI

Squares and roots of 21155094

• 21155094 squared (21155094²) is 447538002148836
• 21155094 cubed (21155094³) is 9467708504030827570584
• The square root of 21155094 is 4599.4667082173
• The cube root of 21155094 is 276.5699469985

Scales and comparisons

• 21,155,094 seconds is equal to 34 weeks, 6 days, 20 hours, 24 minutes, 54 seconds.
• To count from 1 to 21,155,094 would take you about three days!

  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 21155094 cubic inches would be around 23 feet tall.

Recreational maths with 21155094

• 21155094 backwards is 49055112
• 21155094 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21155094's digits is 27
• More coming soon!