28906020

Names of 28906020

• Cardinal: 28906020 can be written as Twenty-eight million, nine hundred six thousand and twenty.

Scientific notation

• Scientific notation: 2.890602 × 10⁷

Factors of 28906020

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1157

Divisors of 28906020

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 9 10 11 12 13 15 18 20 22 26 30 33 36 39 44 45 52 55 60 65 66 78 90 99 110 117 130 132 143 156 165 180 195 198 220 234 260 286 330 390 396 429 468 495 572 585 660 715 780 858 990 1123 1170 1287 1430 1716 1980 2145 2246 2340 2574 2860 3369 4290 4492 5148 5615 6435 6738 8580 10107 11230 12353 12870 13476 14599 16845 20214 22460 24706 25740 29198 33690 37059 40428 43797 49412 50535 58396 61765 67380 72995 74118 87594 101070 111177 123530 131391 145990 148236 160589 175188 185295 202140 218985 222354 247060 262782 291980 321178 370590 437970 444708 481767 525564 555885 642356 656955 741180 802945 875940 963534 1111770 1313910 1445301 1605890 1927068 2223540 2408835 2627820 2890602 3211780 4817670 5781204 7226505 9635340 14453010 28906020
• Sum of all divisors σ(n): 103102272
• Sum of proper divisors (its aliquot sum) s(n): 74196252
• 28906020 is an abundant number, because the sum of its proper divisors (74196252) is greater than itself. Its abundance is 45290232

Bases of 28906020

• Binary: 1101110010001001000100100₂
• Hexadecimal: 0x1B91224
• Base-36: H7K10

Squares and roots of 28906020

• 28906020 squared (28906020²) is 835557992240400
• 28906020 cubed (28906020³) is 24152656034860847208000
• The square root of 28906020 is 5376.4319022937
• The cube root of 28906020 is 306.8994425689

Scales and comparisons

• 28,906,020 seconds is equal to 47 weeks, 5 days, 13 hours, 27 minutes.
• To count from 1 to 28,906,020 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 28906020 cubic inches would be around 25.6 feet tall.

Recreational maths with 28906020

• 28906020 backwards is 02060982
• The number of decimal digits it has is: 8
• The sum of 28906020's digits is 27
• More coming soon!