28941990

Names of 28941990

• Cardinal: 28941990 can be written as Twenty-eight million, nine hundred forty-one thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 2.894199 × 10⁷

Factors of 28941990

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 112

Divisors of 28941990

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 5 6 7 10 11 14 15 17 21 22 30 33 34 35 42 51 55 66 67 70 77 85 102 105 110 119 121 134 154 165 170 187 201 210 231 238 242 255 330 335 357 363 374 385 402 462 469 510 561 595 605 670 714 726 737 770 847 935 938 1005 1122 1139 1155 1190 1210 1309 1407 1474 1694 1785 1815 1870 2010 2057 2211 2278 2310 2345 2541 2618 2805 2814 3417 3570 3630 3685 3927 4114 4235 4422 4690 5082 5159 5610 5695 6171 6545 6834 7035 7370 7854 7973 8107 8470 10285 10318 11055 11390 12342 12529 12705 13090 14070 14399 15477 15946 16214 17085 19635 20570 22110 23919 24321 25058 25410 25795 28798 30855 30954 34170 37587 39270 39865 40535 43197 47838 48642 51590 56749 61710 62645 71995 75174 77385 79730 81070 86394 87703 113498 119595 121605 125290 137819 143990 154770 170247 175406 187935 215985 239190 243210 263109 275638 283745 340494 375870 413457 431970 438515 526218 567490 689095 826914 851235 877030 964733 1315545 1378190 1702470 1929466 2067285 2631090 2894199 4134570 4823665 5788398 9647330 14470995 28941990
• Sum of all divisors σ(n): 93768192
• Sum of proper divisors (its aliquot sum) s(n): 64826202
• 28941990 is an abundant number, because the sum of its proper divisors (64826202) is greater than itself. Its abundance is 35884212

Bases of 28941990

• Binary: 1101110011001111010100110₂
• Hexadecimal: 0x1B99EA6
• Base-36: H8BS6

Squares and roots of 28941990

• 28941990 squared (28941990²) is 837638785160100
• 28941990 cubed (28941990³) is 24242933343715762599000
• The square root of 28941990 is 5379.7760176423
• The cube root of 28941990 is 307.0266893863

Scales and comparisons

• 28,941,990 seconds is equal to 47 weeks, 5 days, 23 hours, 26 minutes, 30 seconds.
• To count from 1 to 28,941,990 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 28941990 cubic inches would be around 25.6 feet tall.

Recreational maths with 28941990

• 28941990 backwards is 09914982
• 28941990 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 28941990's digits is 42
• More coming soon!