28240000

Names of 28240000

• Cardinal: 28240000 can be written as Twenty-eight million, two hundred forty thousand.

Scientific notation

• Scientific notation: 2.824 × 10⁷

Factors of 28240000

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 360

Divisors of 28240000

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 125 128 160 200 250 320 353 400 500 625 640 706 800 1000 1250 1412 1600 1765 2000 2500 2824 3200 3530 4000 5000 5648 7060 8000 8825 10000 11296 14120 16000 17650 20000 22592 28240 35300 40000 44125 45184 56480 70600 80000 88250 112960 141200 176500 220625 225920 282400 353000 441250 564800 706000 882500 1129600 1412000 1765000 2824000 3530000 5648000 7060000 14120000 28240000
• Sum of all divisors σ(n): 70500870
• Sum of proper divisors (its aliquot sum) s(n): 42260870
• 28240000 is an abundant number, because the sum of its proper divisors (42260870) is greater than itself. Its abundance is 14020870

Bases of 28240000

• Binary: 1101011101110100010000000₂
• Hexadecimal: 0x1AEE880
• Base-36: GTA4G

Squares and roots of 28240000

• 28240000 squared (28240000²) is 797497600000000
• 28240000 cubed (28240000³) is 22521332224000000000000
• The square root of 28240000 is 5314.1321022345
• The cube root of 28240000 is 304.5240269255

Scales and comparisons

• 28,240,000 seconds is equal to 46 weeks, 4 days, 20 hours, 26 minutes, 40 seconds.
• To count from 1 to 28,240,000 would take you about eighteen weeks!

  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 28240000 cubic inches would be around 25.4 feet tall.

Recreational maths with 28240000

• 28240000 backwards is 00004282
• 28240000 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 28240000's digits is 16
• More coming soon!