12887420

Names of 12887420

• Cardinal: 12887420 can be written as Twelve million, eight hundred eighty-seven thousand, four hundred twenty.

Scientific notation

• Scientific notation: 1.288742 × 10⁷

Factors of 12887420

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 197

Divisors of 12887420

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 5 7 10 13 14 20 26 28 35 52 65 70 73 91 97 130 140 146 182 194 260 292 364 365 388 455 485 511 679 730 910 949 970 1022 1261 1358 1460 1820 1898 1940 2044 2522 2555 2716 3395 3796 4745 5044 5110 6305 6643 6790 7081 8827 9490 10220 12610 13286 13580 14162 17654 18980 25220 26572 28324 33215 35308 35405 44135 49567 66430 70810 88270 92053 99134 132860 141620 176540 184106 198268 247835 368212 460265 495670 644371 920530 991340 1288742 1841060 2577484 3221855 6443710 12887420
• Sum of all divisors σ(n): 34113408
• Sum of proper divisors (its aliquot sum) s(n): 21225988
• 12887420 is an abundant number, because the sum of its proper divisors (21225988) is greater than itself. Its abundance is 8338568

Bases of 12887420

• Binary: 110001001010010101111100₂
• Hexadecimal: 0xC4A57C
• Base-36: 7O7ZW

Squares and roots of 12887420

• 12887420 squared (12887420²) is 166085594256400
• 12887420 cubed (12887420³) is 2140414809131814488000
• The square root of 12887420 is 3589.9052912301
• The cube root of 12887420 is 234.4527480137

Scales and comparisons

• 12,887,420 seconds is equal to 21 weeks, 2 days, 3 hours, 50 minutes, 20 seconds.
• To count from 1 to 12,887,420 would take you about thirty-one 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 12887420 cubic inches would be around 19.5 feet tall.

Recreational maths with 12887420

• 12887420 backwards is 02478821
• The number of decimal digits it has is: 8
• The sum of 12887420's digits is 32
• More coming soon!