1220387

Names of 1220387

• Cardinal: 1220387 can be written as One million, two hundred twenty thousand, three hundred eighty-seven.

Scientific notation

• Scientific notation: 1.220387 × 10⁶

Factors of 1220387

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 877

Divisors of 1220387

• Number of divisors d(n): 8
• Complete list of divisors:
  1 7 313 557 2191 3899 174341 1220387
• Sum of all divisors σ(n): 1401696
• Sum of proper divisors (its aliquot sum) s(n): 181309
• 1220387 is a deficient number, because the sum of its proper divisors (181309) is less than itself. Its deficiency is 1039078

Bases of 1220387

• Binary: 100101001111100100011₂
• Hexadecimal: 0x129F23
• Base-36: Q5NN

Squares and roots of 1220387

• 1220387 squared (1220387²) is 1489344429769
• 1220387 cubed (1220387³) is 1817576580612500603
• The square root of 1220387 is 1104.7112744967
• The cube root of 1220387 is 106.8642702087

Scales and comparisons

• 1,220,387 seconds is equal to 2 weeks, 2 hours, 59 minutes, 47 seconds.
• To count from 1 to 1,220,387 would take you about three 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 1220387 cubic inches would be around 8.9 feet tall.

Recreational maths with 1220387

• 1220387 backwards is 7830221
• The number of decimal digits it has is: 7
• The sum of 1220387's digits is 23
• More coming soon!