12915440

Names of 12915440

• Cardinal: 12915440 can be written as Twelve million, nine hundred fifteen thousand, four hundred forty.

Scientific notation

• Scientific notation: 1.291544 × 10⁷

Factors of 12915440

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 348

Divisors of 12915440

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 5 8 10 16 19 20 29 38 40 58 76 80 95 116 145 152 190 232 290 293 304 380 464 551 580 586 760 1102 1160 1172 1465 1520 2204 2320 2344 2755 2930 4408 4688 5510 5567 5860 8497 8816 11020 11134 11720 16994 22040 22268 23440 27835 33988 42485 44080 44536 55670 67976 84970 89072 111340 135952 161443 169940 222680 322886 339880 445360 645772 679760 807215 1291544 1614430 2583088 3228860 6457720 12915440
• Sum of all divisors σ(n): 32810400
• Sum of proper divisors (its aliquot sum) s(n): 19894960
• 12915440 is an abundant number, because the sum of its proper divisors (19894960) is greater than itself. Its abundance is 6979520

Bases of 12915440

• Binary: 110001010001001011110000₂
• Hexadecimal: 0xC512F0
• Base-36: 7OTM8

Squares and roots of 12915440

• 12915440 squared (12915440²) is 166808590393600
• 12915440 cubed (12915440³) is 2154406340713117184000
• The square root of 12915440 is 3593.8057821757
• The cube root of 12915440 is 234.6225417783

Scales and comparisons

• 12,915,440 seconds is equal to 21 weeks, 2 days, 11 hours, 37 minutes, 20 seconds.
• To count from 1 to 12,915,440 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 12915440 cubic inches would be around 19.6 feet tall.

Recreational maths with 12915440

• 12915440 backwards is 04451921
• The number of decimal digits it has is: 8
• The sum of 12915440's digits is 26
• More coming soon!