28872120

Names of 28872120

• Cardinal: 28872120 can be written as Twenty-eight million, eight hundred seventy-two thousand, one hundred twenty.

Scientific notation

• Scientific notation: 2.887212 × 10⁷

Factors of 28872120

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 14180

Divisors of 28872120

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 17 20 24 30 34 40 51 60 68 85 102 120 136 170 204 255 340 408 510 680 1020 2040 14153 28306 42459 56612 70765 84918 113224 141530 169836 212295 240601 283060 339672 424590 481202 566120 721803 849180 962404 1203005 1443606 1698360 1924808 2406010 2887212 3609015 4812020 5774424 7218030 9624040 14436060 28872120
• Sum of all divisors σ(n): 91717920
• Sum of proper divisors (its aliquot sum) s(n): 62845800
• 28872120 is an abundant number, because the sum of its proper divisors (62845800) is greater than itself. Its abundance is 33973680

Bases of 28872120

• Binary: 1101110001000110110111000₂
• Hexadecimal: 0x1B88DB8
• Base-36: H6TVC

Squares and roots of 28872120

• 28872120 squared (28872120²) is 833599313294400
• 28872120 cubed (28872120³) is 24067779405353512128000
• The square root of 28872120 is 5373.2783289161
• The cube root of 28872120 is 306.7794218851

Scales and comparisons

• 28,872,120 seconds is equal to 47 weeks, 5 days, 4 hours, 2 minutes.
• To count from 1 to 28,872,120 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 28872120 cubic inches would be around 25.6 feet tall.

Recreational maths with 28872120

• 28872120 backwards is 02127882
• 28872120 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 28872120's digits is 30
• More coming soon!