28873728

Names of 28873728

• Cardinal: 28873728 can be written as Twenty-eight million, eight hundred seventy-three thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 2.8873728 × 10⁷

Factors of 28873728

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 259

Divisors of 28873728

• Number of divisors d(n): 132
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 18 24 26 32 36 39 48 52 64 72 78 96 104 117 128 144 156 192 208 234 241 256 288 312 384 416 468 482 512 576 624 723 768 832 936 964 1024 1152 1248 1446 1536 1664 1872 1928 2169 2304 2496 2892 3072 3133 3328 3744 3856 4338 4608 4992 5784 6266 6656 7488 7712 8676 9216 9399 9984 11568 12532 13312 14976 15424 17352 18798 19968 23136 25064 28197 29952 30848 34704 37596 39936 46272 50128 56394 59904 61696 69408 75192 92544 100256 112788 119808 123392 138816 150384 185088 200512 225576 246784 277632 300768 370176 401024 451152 555264 601536 740352 802048 902304 1110528 1203072 1604096 1804608 2221056 2406144 3208192 3609216 4812288 7218432 9624576 14436864 28873728
• Sum of all divisors σ(n): 90158068
• Sum of proper divisors (its aliquot sum) s(n): 61284340
• 28873728 is an abundant number, because the sum of its proper divisors (61284340) is greater than itself. Its abundance is 32410612

Bases of 28873728

• Binary: 1101110001001010000000000₂
• Hexadecimal: 0x1B89400
• Base-36: H6V40

Squares and roots of 28873728

• 28873728 squared (28873728²) is 833692168617984
• 28873728 cubed (28873728³) is 24071800912405805924352
• The square root of 28873728 is 5373.4279561561
• The cube root of 28873728 is 306.7851170235

Scales and comparisons

• 28,873,728 seconds is equal to 47 weeks, 5 days, 4 hours, 28 minutes, 48 seconds.
• To count from 1 to 28,873,728 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 28873728 cubic inches would be around 25.6 feet tall.

Recreational maths with 28873728

• 28873728 backwards is 82737882
• The number of decimal digits it has is: 8
• The sum of 28873728's digits is 45
• More coming soon!