21204330

Names of 21204330

• Cardinal: 21204330 can be written as Twenty-one million, two hundred four thousand, three hundred thirty.

Scientific notation

• Scientific notation: 2.120433 × 10⁷

Factors of 21204330

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 2783

Divisors of 21204330

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 5 6 7 10 14 15 21 30 35 37 42 70 74 105 111 185 210 222 259 370 518 555 777 1110 1295 1554 2590 2729 3885 5458 7770 8187 13645 16374 19103 27290 38206 40935 57309 81870 95515 100973 114618 191030 201946 286545 302919 504865 573090 605838 706811 1009730 1413622 1514595 2120433 3029190 3534055 4240866 7068110 10602165 21204330
• Sum of all divisors σ(n): 59754240
• Sum of proper divisors (its aliquot sum) s(n): 38549910
• 21204330 is an abundant number, because the sum of its proper divisors (38549910) is greater than itself. Its abundance is 17345580

Bases of 21204330

• Binary: 1010000111000110101101010₂
• Hexadecimal: 0x1438D6A
• Base-36: CMHD6

Squares and roots of 21204330

• 21204330 squared (21204330²) is 449623610748900
• 21204330 cubed (21204330³) is 9533967418111222737000
• The square root of 21204330 is 4604.8159572343
• The cube root of 21204330 is 276.7843421289

Scales and comparisons

• 21,204,330 seconds is equal to 35 weeks, 10 hours, 5 minutes, 30 seconds.
• To count from 1 to 21,204,330 would take you about four 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 21204330 cubic inches would be around 23.1 feet tall.

Recreational maths with 21204330

• 21204330 backwards is 03340212
• 21204330 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21204330's digits is 15
• More coming soon!