28901520

Names of 28901520

• Cardinal: 28901520 can be written as Twenty-eight million, nine hundred one thousand, five hundred twenty.

Scientific notation

• Scientific notation: 2.890152 × 10⁷

Factors of 28901520

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 440

Divisors of 28901520

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 36 40 45 48 60 72 80 90 120 137 144 180 240 274 293 360 411 548 586 685 720 822 879 1096 1172 1233 1370 1465 1644 1758 2055 2192 2344 2466 2637 2740 2930 3288 3516 4110 4395 4688 4932 5274 5480 5860 6165 6576 7032 8220 8790 9864 10548 10960 11720 12330 13185 14064 16440 17580 19728 21096 23440 24660 26370 32880 35160 40141 42192 49320 52740 70320 80282 98640 105480 120423 160564 200705 210960 240846 321128 361269 401410 481692 602115 642256 722538 802820 963384 1204230 1445076 1605640 1806345 1926768 2408460 2890152 3211280 3612690 4816920 5780304 7225380 9633840 14450760 28901520
• Sum of all divisors σ(n): 98103096
• Sum of proper divisors (its aliquot sum) s(n): 69201576
• 28901520 is an abundant number, because the sum of its proper divisors (69201576) is greater than itself. Its abundance is 40300056

Bases of 28901520

• Binary: 1101110010000000010010000₂
• Hexadecimal: 0x1B90090
• Base-36: H7GK0

Squares and roots of 28901520

• 28901520 squared (28901520²) is 835297858310400
• 28901520 cubed (28901520³) is 24141377757915191808000
• The square root of 28901520 is 5376.0133928405
• The cube root of 28901520 is 306.8835160229

Scales and comparisons

• 28,901,520 seconds is equal to 47 weeks, 5 days, 12 hours, 12 minutes.
• To count from 1 to 28,901,520 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 28901520 cubic inches would be around 25.6 feet tall.

Recreational maths with 28901520

• 28901520 backwards is 02510982
• The number of decimal digits it has is: 8
• The sum of 28901520's digits is 27
• More coming soon!