1389044720

Names of 1389044720

• Cardinal: 1389044720 can be written as One billion, three hundred eighty-nine million, forty-four thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.38904472 × 10⁹

Factors of 1389044720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 19672

Divisors of 1389044720

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 35 40 56 70 80 112 127 140 254 280 508 560 635 889 1016 1270 1778 2032 2540 3556 4445 5080 7112 8890 10160 14224 17780 19531 35560 39062 71120 78124 97655 136717 156248 195310 273434 312496 390620 546868 683585 781240 1093736 1367170 1562480 2187472 2480437 2734340 4960874 5468680 9921748 10937360 12402185 17363059 19843496 24804370 34726118 39686992 49608740 69452236 86815295 99217480 138904472 173630590 198434960 277808944 347261180 694522360 1389044720
• Sum of all divisors σ(n): 3720142848
• Sum of proper divisors (its aliquot sum) s(n): 2331098128
• 1389044720 is an abundant number, because the sum of its proper divisors (2331098128) is greater than itself. Its abundance is 942053408

Bases of 1389044720

• Binary: 1010010110010110010001111110000₂
• Hexadecimal: 0x52CB23F0
• Base-36: MZ01RK

Squares and roots of 1389044720

• 1389044720 squared (1389044720²) is 1929445234159878400
• 1389044720 cubed (1389044720³) is 2680085715038942727362048000
• The square root of 1389044720 is 37269.8902601013
• The cube root of 1389044720 is 1115.7633093019

Scales and comparisons

• 1,389,044,720 seconds is equal to 44 years, 8 weeks, 4 days, 21 hours, 45 minutes, 20 seconds.
• To count from 1 to 1,389,044,720 would take you about eighty-eight years!

  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 1389044720 cubic inches would be around 93 feet tall.

Recreational maths with 1389044720

• 1389044720 backwards is 0274409831
• The number of decimal digits it has is: 10
• The sum of 1389044720's digits is 38
• More coming soon!