12978240

Names of 12978240

• Cardinal: 12978240 can be written as Twelve million, nine hundred seventy-eight thousand, two hundred forty.

Scientific notation

• Scientific notation: 1.297824 × 10⁷

Factors of 12978240

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1250

Divisors of 12978240

• Number of divisors d(n): 112
• Complete list of divisors:
  1 2 3 4 5 6 8 10 11 12 15 16 20 22 24 30 32 33 40 44 48 55 60 64 66 80 88 96 110 120 132 160 165 176 192 220 240 264 320 330 352 440 480 528 660 704 880 960 1056 1229 1320 1760 2112 2458 2640 3520 3687 4916 5280 6145 7374 9832 10560 12290 13519 14748 18435 19664 24580 27038 29496 36870 39328 40557 49160 54076 58992 67595 73740 78656 81114 98320 108152 117984 135190 147480 162228 196640 202785 216304 235968 270380 294960 324456 393280 405570 432608 540760 589920 648912 811140 865216 1081520 1179840 1297824 1622280 2163040 2595648 3244560 4326080 6489120 12978240
• Sum of all divisors σ(n): 44988480
• Sum of proper divisors (its aliquot sum) s(n): 32010240
• 12978240 is an abundant number, because the sum of its proper divisors (32010240) is greater than itself. Its abundance is 19032000

Bases of 12978240

• Binary: 110001100000100001000000₂
• Hexadecimal: 0xC60840
• Base-36: 7Q62O

Squares and roots of 12978240

• 12978240 squared (12978240²) is 168434713497600
• 12978240 cubed (12978240³) is 2185986136103092224000
• The square root of 12978240 is 3602.5324426021
• The cube root of 12978240 is 235.0022030879

Scales and comparisons

• 12,978,240 seconds is equal to 21 weeks, 3 days, 5 hours, 4 minutes.
• To count from 1 to 12,978,240 would take you about thirty-two 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 12978240 cubic inches would be around 19.6 feet tall.

Recreational maths with 12978240

• 12978240 backwards is 04287921
• 12978240 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 12978240's digits is 33
• More coming soon!