28560720

Names of 28560720

• Cardinal: 28560720 can be written as Twenty-eight million, five hundred sixty thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.856072 × 10⁷

Factors of 28560720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 2086

Divisors of 28560720

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 59 60 80 118 120 177 236 240 295 354 472 590 708 885 944 1180 1416 1770 2017 2360 2832 3540 4034 4720 6051 7080 8068 10085 12102 14160 16136 20170 24204 30255 32272 40340 48408 60510 80680 96816 119003 121020 161360 238006 242040 357009 476012 484080 595015 714018 952024 1190030 1428036 1785045 1904048 2380060 2856072 3570090 4760120 5712144 7140180 9520240 14280360 28560720
• Sum of all divisors σ(n): 90083520
• Sum of proper divisors (its aliquot sum) s(n): 61522800
• 28560720 is an abundant number, because the sum of its proper divisors (61522800) is greater than itself. Its abundance is 32962080

Bases of 28560720

• Binary: 1101100111100110101010000₂
• Hexadecimal: 0x1B3CD50
• Base-36: H05LC

Squares and roots of 28560720

• 28560720 squared (28560720²) is 815714726918400
• 28560720 cubed (28560720³) is 23297399915392885248000
• The square root of 28560720 is 5344.2230492373
• The cube root of 28560720 is 305.6725105023

Scales and comparisons

• 28,560,720 seconds is equal to 47 weeks, 1 day, 13 hours, 32 minutes.
• To count from 1 to 28,560,720 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 28560720 cubic inches would be around 25.5 feet tall.

Recreational maths with 28560720

• 28560720 backwards is 02706582
• 28560720 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 28560720's digits is 30
• More coming soon!