21364239

Names of 21364239

• Cardinal: 21364239 can be written as Twenty-one million, three hundred sixty-four thousand, two hundred thirty-nine.

Scientific notation

• Scientific notation: 2.1364239 × 10⁷

Factors of 21364239

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 519

Divisors of 21364239

• Number of divisors d(n): 32
• Complete list of divisors:
  1 3 13 31 39 41 93 123 403 431 533 1209 1271 1293 1599 3813 5603 13361 16523 16809 17671 40083 49569 53013 173693 229723 521079 547801 689169 1643403 7121413 21364239
• Sum of all divisors σ(n): 32514048
• Sum of proper divisors (its aliquot sum) s(n): 11149809
• 21364239 is a deficient number, because the sum of its proper divisors (11149809) is less than itself. Its deficiency is 10214430

Bases of 21364239

• Binary: 1010001011111111000001111₂
• Hexadecimal: 0x145FE0F
• Base-36: CPWR3

Squares and roots of 21364239

• 21364239 squared (21364239²) is 456430708049121
• 21364239 cubed (21364239³) is 9751294733700644783919
• The square root of 21364239 is 4622.1465792421
• The cube root of 21364239 is 277.4783750699

Scales and comparisons

• 21,364,239 seconds is equal to 35 weeks, 2 days, 6 hours, 30 minutes, 39 seconds.
• To count from 1 to 21,364,239 would take you about six 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 21364239 cubic inches would be around 23.1 feet tall.

Recreational maths with 21364239

• 21364239 backwards is 93246312
• The number of decimal digits it has is: 8
• The sum of 21364239's digits is 30
• More coming soon!