21400000

Names of 21400000

• Cardinal: 21400000 can be written as Twenty-one million, four hundred thousand.

Scientific notation

• Scientific notation: 2.14 × 10⁷

Factors of 21400000

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 114

Divisors of 21400000

• Number of divisors d(n): 84
• Complete list of divisors:
  1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 107 125 160 200 214 250 320 400 428 500 535 625 800 856 1000 1070 1250 1600 1712 2000 2140 2500 2675 3125 3424 4000 4280 5000 5350 6250 6848 8000 8560 10000 10700 12500 13375 17120 20000 21400 25000 26750 34240 40000 42800 50000 53500 66875 85600 100000 107000 133750 171200 200000 214000 267500 334375 428000 535000 668750 856000 1070000 1337500 2140000 2675000 4280000 5350000 10700000 21400000
• Sum of all divisors σ(n): 53574696
• Sum of proper divisors (its aliquot sum) s(n): 32174696
• 21400000 is an abundant number, because the sum of its proper divisors (32174696) is greater than itself. Its abundance is 10774696

Bases of 21400000

• Binary: 1010001101000100111000000₂
• Hexadecimal: 0x14689C0
• Base-36: CQOCG

Squares and roots of 21400000

• 21400000 squared (21400000²) is 457960000000000
• 21400000 cubed (21400000³) is 9800344000000000000000
• The square root of 21400000 is 4626.0134024881
• The cube root of 21400000 is 277.6331098547

Scales and comparisons

• 21,400,000 seconds is equal to 35 weeks, 2 days, 16 hours, 26 minutes, 40 seconds.
• To count from 1 to 21,400,000 would take you about twelve hours!

  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 21400000 cubic inches would be around 23.1 feet tall.

Recreational maths with 21400000

• 21400000 backwards is 00000412
• The number of decimal digits it has is: 8
• The sum of 21400000's digits is 7
• More coming soon!