90864990

Names of 90864990

• Cardinal: 90864990 can be written as Ninety million, eight hundred sixty-four thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 9.086499 × 10⁷

Factors of 90864990

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 684

Divisors of 90864990

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 5 6 9 10 15 18 27 30 45 54 61 81 90 122 135 162 183 243 270 305 366 405 486 549 610 613 810 915 1098 1215 1226 1647 1830 1839 2430 2745 3065 3294 3678 4941 5490 5517 6130 8235 9195 9882 11034 14823 16470 16551 18390 24705 27585 29646 33102 37393 49410 49653 55170 74115 74786 82755 99306 112179 148230 148959 165510 186965 224358 248265 297918 336537 373930 496530 560895 673074 744795 1009611 1121790 1489590 1682685 2019222 3028833 3365370 5048055 6057666 9086499 10096110 15144165 18172998 30288330 45432495 90864990
• Sum of all divisors σ(n): 249421536
• Sum of proper divisors (its aliquot sum) s(n): 158556546
• 90864990 is an abundant number, because the sum of its proper divisors (158556546) is greater than itself. Its abundance is 67691556

Bases of 90864990

• Binary: 101011010100111110101011110₂
• Hexadecimal: 0x56A7D5E
• Base-36: 1I3JVI

Squares and roots of 90864990

• 90864990 squared (90864990²) is 8256446407700100
• 90864990 cubed (90864990³) is 750221920271205509499000
• The square root of 90864990 is 9532.3129407295
• The cube root of 90864990 is 449.5715922779

Scales and comparisons

• 90,864,990 seconds is equal to 2 years, 46 weeks, 1 day, 16 hours, 16 minutes, 30 seconds.
• To count from 1 to 90,864,990 would take you about four years!

  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 90864990 cubic inches would be around 37.5 feet tall.

Recreational maths with 90864990

• 90864990 backwards is 09946809
• 90864990 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 90864990's digits is 45
• More coming soon!