12812220

Names of 12812220

• Cardinal: 12812220 can be written as Twelve million, eight hundred twelve thousand, two hundred twenty.

Scientific notation

• Scientific notation: 1.281222 × 10⁷

Factors of 12812220

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 159

Divisors of 12812220

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 17 18 20 30 34 36 45 51 53 60 68 79 85 90 102 106 153 158 159 170 180 204 212 237 255 265 306 316 318 340 395 474 477 510 530 612 636 711 765 790 795 901 948 954 1020 1060 1185 1343 1422 1530 1580 1590 1802 1908 2370 2385 2686 2703 2844 3060 3180 3555 3604 4029 4187 4505 4740 4770 5372 5406 6715 7110 8058 8109 8374 9010 9540 10812 12087 12561 13430 13515 14220 16116 16218 16748 18020 20145 20935 24174 25122 26860 27030 32436 37683 40290 40545 41870 48348 50244 54060 60435 62805 71179 75366 80580 81090 83740 120870 125610 142358 150732 162180 188415 213537 241740 251220 284716 355895 376830 427074 640611 711790 753660 854148 1067685 1281222 1423580 2135370 2562444 3203055 4270740 6406110 12812220
• Sum of all divisors σ(n): 42456960
• Sum of proper divisors (its aliquot sum) s(n): 29644740
• 12812220 is an abundant number, because the sum of its proper divisors (29644740) is greater than itself. Its abundance is 16832520

Bases of 12812220

• Binary: 110000110111111110111100₂
• Hexadecimal: 0xC37FBC
• Base-36: 7MLZ0

Squares and roots of 12812220

• 12812220 squared (12812220²) is 164152981328400
• 12812220 cubed (12812220³) is 2103164110435353048000
• The square root of 12812220 is 3579.4161535089
• The cube root of 12812220 is 233.9958359987

Scales and comparisons

• 12,812,220 seconds is equal to 21 weeks, 1 day, 6 hours, 57 minutes.
• To count from 1 to 12,812,220 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 12812220 cubic inches would be around 19.5 feet tall.

Recreational maths with 12812220

• 12812220 backwards is 02221821
• 12812220 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 12812220's digits is 18
• More coming soon!