28647216

Names of 28647216

• Cardinal: 28647216 can be written as Twenty-eight million, six hundred forty-seven thousand, two hundred sixteen.

Scientific notation

• Scientific notation: 2.8647216 × 10⁷

Factors of 28647216

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 5119

Divisors of 28647216

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 18 24 26 27 36 39 48 52 54 72 78 104 108 117 144 156 208 216 234 312 351 432 468 624 702 936 1404 1872 2808 5101 5616 10202 15303 20404 30606 40808 45909 61212 66313 81616 91818 122424 132626 137727 183636 198939 244848 265252 275454 367272 397878 530504 550908 596817 734544 795756 1061008 1101816 1193634 1591512 1790451 2203632 2387268 3183024 3580902 4774536 7161804 9549072 14323608 28647216
• Sum of all divisors σ(n): 88570720
• Sum of proper divisors (its aliquot sum) s(n): 59923504
• 28647216 is an abundant number, because the sum of its proper divisors (59923504) is greater than itself. Its abundance is 31276288

Bases of 28647216

• Binary: 1101101010001111100110000₂
• Hexadecimal: 0x1B51F30
• Base-36: H20C0

Squares and roots of 28647216

• 28647216 squared (28647216²) is 820662984550656
• 28647216 cubed (28647216³) is 23509709781627305373696
• The square root of 28647216 is 5352.3094080967
• The cube root of 28647216 is 305.9807754167

Scales and comparisons

• 28,647,216 seconds is equal to 47 weeks, 2 days, 13 hours, 33 minutes, 36 seconds.
• To count from 1 to 28,647,216 would take you about nineteen 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 28647216 cubic inches would be around 25.5 feet tall.

Recreational maths with 28647216

• 28647216 backwards is 61274682
• 28647216 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 28647216's digits is 36
• More coming soon!