28811090

Names of 28811090

• Cardinal: 28811090 can be written as Twenty-eight million, eight hundred eleven thousand and ninety.

Scientific notation

• Scientific notation: 2.881109 × 10⁷

Factors of 28811090

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 144

Divisors of 28811090

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 5 7 10 11 14 17 22 31 34 35 55 62 70 71 77 85 110 119 142 154 155 170 187 217 238 310 341 355 374 385 434 497 527 595 682 710 770 781 935 994 1054 1085 1190 1207 1309 1562 1705 1870 2170 2201 2387 2414 2485 2618 2635 3410 3689 3905 4402 4774 4970 5270 5467 5797 6035 6545 7378 7810 8449 10934 11005 11594 11935 12070 13090 13277 15407 16898 18445 22010 23870 24211 26554 27335 28985 30814 36890 37417 40579 42245 48422 54670 57970 66385 74834 77035 81158 84490 92939 121055 132770 154070 169477 185878 187085 202895 242110 261919 338954 374170 405790 411587 464695 523838 823174 847385 929390 1309595 1694770 2057935 2619190 2881109 4115870 5762218 14405545 28811090
• Sum of all divisors σ(n): 71663616
• Sum of proper divisors (its aliquot sum) s(n): 42852526
• 28811090 is an abundant number, because the sum of its proper divisors (42852526) is greater than itself. Its abundance is 14041436

Bases of 28811090

• Binary: 1101101111001111101010010₂
• Hexadecimal: 0x1B79F52
• Base-36: H5IS2

Squares and roots of 28811090

• 28811090 squared (28811090²) is 830078906988100
• 28811090 cubed (28811090³) is 23915478096335778029000
• The square root of 28811090 is 5367.5962962951
• The cube root of 28811090 is 306.5631122213

Scales and comparisons

• 28,811,090 seconds is equal to 47 weeks, 4 days, 11 hours, 4 minutes, 50 seconds.
• To count from 1 to 28,811,090 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 28811090 cubic inches would be around 25.5 feet tall.

Recreational maths with 28811090

• 28811090 backwards is 09011882
• The number of decimal digits it has is: 8
• The sum of 28811090's digits is 29
• More coming soon!