28253988

Names of 28253988

• Cardinal: 28253988 can be written as Twenty-eight million, two hundred fifty-three thousand, nine hundred eighty-eight.

Scientific notation

• Scientific notation: 2.8253988 × 10⁷

Factors of 28253988

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 312

Divisors of 28253988

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 7 9 12 14 18 19 21 27 28 36 38 42 49 54 57 63 76 84 98 108 114 126 133 147 171 189 196 228 252 266 281 294 342 378 399 441 513 532 562 588 684 756 798 843 882 931 1026 1124 1197 1323 1596 1686 1764 1862 1967 2052 2394 2529 2646 2793 3372 3591 3724 3934 4788 5058 5292 5339 5586 5901 7182 7587 7868 8379 10116 10678 11172 11802 13769 14364 15174 16017 16758 17703 21356 23604 25137 27538 30348 32034 33516 35406 37373 41307 48051 50274 53109 55076 64068 70812 74746 82614 96102 100548 106218 112119 123921 144153 149492 165228 192204 212436 224238 247842 261611 288306 336357 371763 448476 495684 523222 576612 672714 743526 784833 1009071 1046444 1345428 1487052 1569666 2018142 2354499 3139332 4036284 4708998 7063497 9417996 14126994 28253988
• Sum of all divisors σ(n): 90014400
• Sum of proper divisors (its aliquot sum) s(n): 61760412
• 28253988 is an abundant number, because the sum of its proper divisors (61760412) is greater than itself. Its abundance is 33506424

Bases of 28253988

• Binary: 1101011110001111100100100₂
• Hexadecimal: 0x1AF1F24
• Base-36: GTKX0

Squares and roots of 28253988

• 28253988 squared (28253988²) is 798287837904144
• 28253988 cubed (28253988³) is 22554814992689629726272
• The square root of 28253988 is 5315.4480526105
• The cube root of 28253988 is 304.5742981599

Scales and comparisons

• 28,253,988 seconds is equal to 46 weeks, 5 days, 19 minutes, 48 seconds.
• To count from 1 to 28,253,988 would take you about eighteen 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 28253988 cubic inches would be around 25.4 feet tall.

Recreational maths with 28253988

• 28253988 backwards is 88935282
• The number of decimal digits it has is: 8
• The sum of 28253988's digits is 45
• More coming soon!