21109120

Names of 21109120

• Cardinal: 21109120 can be written as Twenty-one million, one hundred nine thousand, one hundred twenty.

Scientific notation

• Scientific notation: 2.110912 × 10⁷

Factors of 21109120

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 32990

Divisors of 21109120

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 4 5 8 10 16 20 32 40 64 80 128 160 320 640 32983 65966 131932 164915 263864 329830 527728 659660 1055456 1319320 2110912 2638640 4221824 5277280 10554560 21109120
• Sum of all divisors σ(n): 50465520
• Sum of proper divisors (its aliquot sum) s(n): 29356400
• 21109120 is an abundant number, because the sum of its proper divisors (29356400) is greater than itself. Its abundance is 8247280

Bases of 21109120

• Binary: 1010000100001100110000000₂
• Hexadecimal: 0x1421980
• Base-36: CKFWG

Squares and roots of 21109120

• 21109120 squared (21109120²) is 445594947174400
• 21109120 cubed (21109120³) is 9406117211298070528000
• The square root of 21109120 is 4594.4662366811
• The cube root of 21109120 is 276.3694555141

Scales and comparisons

• 21,109,120 seconds is equal to 34 weeks, 6 days, 7 hours, 38 minutes, 40 seconds.
• To count from 1 to 21,109,120 would take you about two 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 21109120 cubic inches would be around 23 feet tall.

Recreational maths with 21109120

• 21109120 backwards is 02190112
• 21109120 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21109120's digits is 16
• More coming soon!