28669872

Names of 28669872

• Cardinal: 28669872 can be written as Twenty-eight million, six hundred sixty-nine thousand, eight hundred seventy-two.

Scientific notation

• Scientific notation: 2.8669872 × 10⁷

Factors of 28669872

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 7780

Divisors of 28669872

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 3 4 6 7 8 11 12 14 16 21 22 24 28 33 42 44 48 56 66 77 84 88 112 132 154 168 176 231 264 308 336 462 528 616 924 1232 1848 3696 7757 15514 23271 31028 46542 54299 62056 85327 93084 108598 124112 162897 170654 186168 217196 255981 325794 341308 372336 434392 511962 597289 651588 682616 868784 1023924 1194578 1303176 1365232 1791867 2047848 2389156 2606352 3583734 4095696 4778312 7167468 9556624 14334936 28669872
• Sum of all divisors σ(n): 92351232
• Sum of proper divisors (its aliquot sum) s(n): 63681360
• 28669872 is an abundant number, because the sum of its proper divisors (63681360) is greater than itself. Its abundance is 35011488

Bases of 28669872

• Binary: 1101101010111011110110000₂
• Hexadecimal: 0x1B577B0
• Base-36: H2HTC

Squares and roots of 28669872

• 28669872 squared (28669872²) is 821961560496384
• 28669872 cubed (28669872³) is 23565532728351585742848
• The square root of 28669872 is 5354.4254593747
• The cube root of 28669872 is 306.0614170369

Scales and comparisons

• 28,669,872 seconds is equal to 47 weeks, 2 days, 19 hours, 51 minutes, 12 seconds.
• To count from 1 to 28,669,872 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 28669872 cubic inches would be around 25.5 feet tall.

Recreational maths with 28669872

• 28669872 backwards is 27896682
• 28669872 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 28669872's digits is 48
• More coming soon!