21094290

Names of 21094290

• Cardinal: 21094290 can be written as Twenty-one million, ninety-four thousand, two hundred ninety.

Scientific notation

• Scientific notation: 2.109429 × 10⁷

Factors of 21094290

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 11178

Divisors of 21094290

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 5 6 7 9 10 14 15 18 21 27 30 35 42 45 54 63 70 90 105 126 135 189 210 270 315 378 630 945 1890 11161 22322 33483 55805 66966 78127 100449 111610 156254 167415 200898 234381 301347 334830 390635 468762 502245 602694 703143 781270 1004490 1171905 1406286 1506735 2109429 2343810 3013470 3515715 4218858 7031430 10547145 21094290
• Sum of all divisors σ(n): 64293120
• Sum of proper divisors (its aliquot sum) s(n): 43198830
• 21094290 is an abundant number, because the sum of its proper divisors (43198830) is greater than itself. Its abundance is 22104540

Bases of 21094290

• Binary: 1010000011101111110010010₂
• Hexadecimal: 0x141DF92
• Base-36: CK4GI

Squares and roots of 21094290

• 21094290 squared (21094290²) is 444969070604100
• 21094290 cubed (21094290³) is 9386306616353360589000
• The square root of 21094290 is 4592.8520550961
• The cube root of 21094290 is 276.3047201579

Scales and comparisons

• 21,094,290 seconds is equal to 34 weeks, 6 days, 3 hours, 31 minutes, 30 seconds.
• To count from 1 to 21,094,290 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 21094290 cubic inches would be around 23 feet tall.

Recreational maths with 21094290

• 21094290 backwards is 09249012
• 21094290 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21094290's digits is 27
• More coming soon!