28664928

Names of 28664928

• Cardinal: 28664928 can be written as Twenty-eight million, six hundred sixty-four thousand, nine hundred twenty-eight.

Scientific notation

• Scientific notation: 2.8664928 × 10⁷

Factors of 28664928

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 11064

Divisors of 28664928

• Number of divisors d(n): 60
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 32 36 48 54 72 81 96 108 144 162 216 288 324 432 648 864 1296 2592 11059 22118 33177 44236 66354 88472 99531 132708 176944 199062 265416 298593 353888 398124 530832 597186 796248 895779 1061664 1194372 1592496 1791558 2388744 3184992 3583116 4777488 7166232 9554976 14332464 28664928
• Sum of all divisors σ(n): 84310380
• Sum of proper divisors (its aliquot sum) s(n): 55645452
• 28664928 is an abundant number, because the sum of its proper divisors (55645452) is greater than itself. Its abundance is 26980524

Bases of 28664928

• Binary: 1101101010110010001100000₂
• Hexadecimal: 0x1B56460
• Base-36: H2E00

Squares and roots of 28664928

• 28664928 squared (28664928²) is 821678097245184
• 28664928 cubed (28664928³) is 23553343496710197706752
• The square root of 28664928 is 5353.9637652865
• The cube root of 28664928 is 306.0438230203

Scales and comparisons

• 28,664,928 seconds is equal to 47 weeks, 2 days, 18 hours, 28 minutes, 48 seconds.
• To count from 1 to 28,664,928 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 28664928 cubic inches would be around 25.5 feet tall.

Recreational maths with 28664928

• 28664928 backwards is 82946682
• The number of decimal digits it has is: 8
• The sum of 28664928's digits is 45
• More coming soon!