28139800

Names of 28139800

• Cardinal: 28139800 can be written as Twenty-eight million, one hundred thirty-nine thousand, eight hundred.

Scientific notation

• Scientific notation: 2.81398 × 10⁷

Factors of 28139800

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 236

Divisors of 28139800

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 5 8 10 13 20 25 26 40 50 52 65 79 100 104 130 137 158 200 260 274 316 325 395 520 548 632 650 685 790 1027 1096 1300 1370 1580 1781 1975 2054 2600 2740 3160 3425 3562 3950 4108 5135 5480 6850 7124 7900 8216 8905 10270 10823 13700 14248 15800 17810 20540 21646 25675 27400 35620 41080 43292 44525 51350 54115 71240 86584 89050 102700 108230 140699 178100 205400 216460 270575 281398 356200 432920 541150 562796 703495 1082300 1125592 1406990 2164600 2813980 3517475 5627960 7034950 14069900 28139800
• Sum of all divisors σ(n): 71870400
• Sum of proper divisors (its aliquot sum) s(n): 43730600
• 28139800 is an abundant number, because the sum of its proper divisors (43730600) is greater than itself. Its abundance is 15590800

Bases of 28139800

• Binary: 1101011010110000100011000₂
• Hexadecimal: 0x1AD6118
• Base-36: GR4T4

Squares and roots of 28139800

• 28139800 squared (28139800²) is 791848344040000
• 28139800 cubed (28139800³) is 22282454031616792000000
• The square root of 28139800 is 5304.6960327619
• The cube root of 28139800 is 304.1634335887

Scales and comparisons

• 28,139,800 seconds is equal to 46 weeks, 3 days, 16 hours, 36 minutes, 40 seconds.
• To count from 1 to 28,139,800 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 28139800 cubic inches would be around 25.3 feet tall.

Recreational maths with 28139800

• 28139800 backwards is 00893182
• The number of decimal digits it has is: 8
• The sum of 28139800's digits is 31
• More coming soon!