28830720

Names of 28830720

• Cardinal: 28830720 can be written as Twenty-eight million, eight hundred thirty thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.883072 × 10⁷

Factors of 28830720

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 1887

Divisors of 28830720

• Number of divisors d(n): 88
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 128 160 192 240 256 320 384 480 512 640 768 960 1024 1280 1536 1877 1920 2560 3072 3754 3840 5120 5631 7508 7680 9385 11262 15016 15360 18770 22524 28155 30032 37540 45048 56310 60064 75080 90096 112620 120128 150160 180192 225240 240256 300320 360384 450480 480512 600640 720768 900960 961024 1201280 1441536 1801920 1922048 2402560 2883072 3603840 4805120 5766144 7207680 9610240 14415360 28830720
• Sum of all divisors σ(n): 92262384
• Sum of proper divisors (its aliquot sum) s(n): 63431664
• 28830720 is an abundant number, because the sum of its proper divisors (63431664) is greater than itself. Its abundance is 34600944

Bases of 28830720

• Binary: 1101101111110110000000000₂
• Hexadecimal: 0x1B7EC00
• Base-36: H5XXC

Squares and roots of 28830720

• 28830720 squared (28830720²) is 831210415718400
• 28830720 cubed (28830720³) is 23964394756660789248000
• The square root of 28830720 is 5369.4245501729
• The cube root of 28830720 is 306.6327204601

Scales and comparisons

• 28,830,720 seconds is equal to 47 weeks, 4 days, 16 hours, 32 minutes.
• To count from 1 to 28,830,720 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 28830720 cubic inches would be around 25.6 feet tall.

Recreational maths with 28830720

• 28830720 backwards is 02703882
• 28830720 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 28830720's digits is 30
• More coming soon!