21730080

Names of 21730080

• Cardinal: 21730080 can be written as Twenty-one million, seven hundred thirty thousand and eighty.

Scientific notation

• Scientific notation: 2.173008 × 10⁷

Factors of 21730080

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2690

Divisors of 21730080

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 17 20 24 30 32 34 40 48 51 60 68 80 85 96 102 120 136 160 170 204 240 255 272 340 408 480 510 544 680 816 1020 1360 1632 2040 2663 2720 4080 5326 7989 8160 10652 13315 15978 21304 26630 31956 39945 42608 45271 53260 63912 79890 85216 90542 106520 127824 135813 159780 181084 213040 226355 255648 271626 319560 362168 426080 452710 543252 639120 679065 724336 905420 1086504 1278240 1358130 1448672 1810840 2173008 2716260 3621680 4346016 5432520 7243360 10865040 21730080
• Sum of all divisors σ(n): 72503424
• Sum of proper divisors (its aliquot sum) s(n): 50773344
• 21730080 is an abundant number, because the sum of its proper divisors (50773344) is greater than itself. Its abundance is 29043264

Bases of 21730080

• Binary: 1010010111001001100100000₂
• Hexadecimal: 0x14B9320
• Base-36: CXR1C

Squares and roots of 21730080

• 21730080 squared (21730080²) is 472196376806400
• 21730080 cubed (21730080³) is 10260865043713216512000
• The square root of 21730080 is 4661.5533891611
• The cube root of 21730080 is 279.0532650965

Scales and comparisons

• 21,730,080 seconds is equal to 35 weeks, 6 days, 12 hours, 8 minutes.
• To count from 1 to 21,730,080 would take you about six days!

  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 21730080 cubic inches would be around 23.3 feet tall.

Recreational maths with 21730080

• 21730080 backwards is 08003712
• The number of decimal digits it has is: 8
• The sum of 21730080's digits is 21
• More coming soon!