28030640

Names of 28030640

• Cardinal: 28030640 can be written as Twenty-eight million, thirty thousand, six hundred forty.

Scientific notation

• Scientific notation: 2.803064 × 10⁷

Factors of 28030640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 672

Divisors of 28030640

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 5 8 10 11 16 20 22 40 44 53 55 80 88 106 110 176 212 220 265 424 440 530 583 601 848 880 1060 1166 1202 2120 2332 2404 2915 3005 4240 4664 4808 5830 6010 6611 9328 9616 11660 12020 13222 23320 24040 26444 31853 33055 46640 48080 52888 63706 66110 105776 127412 132220 159265 254824 264440 318530 350383 509648 528880 637060 700766 1274120 1401532 1751915 2548240 2803064 3503830 5606128 7007660 14015320 28030640
• Sum of all divisors σ(n): 72557856
• Sum of proper divisors (its aliquot sum) s(n): 44527216
• 28030640 is an abundant number, because the sum of its proper divisors (44527216) is greater than itself. Its abundance is 16496576

Bases of 28030640

• Binary: 1101010111011011010110000₂
• Hexadecimal: 0x1ABB6B0
• Base-36: GOSKW

Squares and roots of 28030640

• 28030640 squared (28030640²) is 785716778809600
• 28030640 cubed (28030640³) is 22024144168771526144000
• The square root of 28030640 is 5294.3970383793
• The cube root of 28030640 is 303.7696200077

Scales and comparisons

• 28,030,640 seconds is equal to 46 weeks, 2 days, 10 hours, 17 minutes, 20 seconds.
• To count from 1 to 28,030,640 would take you about seventeen 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 28030640 cubic inches would be around 25.3 feet tall.

Recreational maths with 28030640

• 28030640 backwards is 04603082
• The number of decimal digits it has is: 8
• The sum of 28030640's digits is 23
• More coming soon!