128394938360

Names of 128394938360

• Cardinal: 128394938360 can be written as One hundred twenty-eight billion, three hundred ninety-four million, nine hundred thirty-eight thousand, three hundred sixty.

Scientific notation

• Scientific notation: 1.2839493836 × 10¹¹

Factors of 128394938360

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 59876

Divisors of 128394938360

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 4 5 8 10 13 20 26 40 52 65 104 130 260 520 4457 8914 17828 22285 35656 44570 55399 57941 89140 110798 115882 178280 221596 231764 276995 289705 443192 463528 553990 579410 720187 1107980 1158820 1440374 2215960 2317640 2880748 3600935 5761496 7201870 14403740 28807480 246913343 493826686 987653372 1234566715 1975306744 2469133430 3209873459 4938266860 6419746918 9876533720 12839493836 16049367295 25678987672 32098734590 64197469180 128394938360
• Sum of all divisors σ(n): 311186232000
• Sum of proper divisors (its aliquot sum) s(n): 182791293640
• 128394938360 is an abundant number, because the sum of its proper divisors (182791293640) is greater than itself. Its abundance is 54396355280

Bases of 128394938360

• Binary: 1110111100100111011110100011111111000₂
• Hexadecimal: 0x1DE4EF47F8
• Base-36: 1MZF14HK

Squares and roots of 128394938360

• 128394938360 squared (128394938360²) is 16485260196468199489600
• 128394938360 cubed (128394938360³) is 2116623966774095963167375461056000
• The square root of 128394938360 is 358322.3944438863
• The cube root of 128394938360 is 5044.8621189901

Scales and comparisons

• 128,394,938,360 seconds is equal to 4,082 years, 29 weeks, 1 day, 12 hours, 39 minutes, 20 seconds.
• To count from 1 to 128,394,938,360 would take you about eight thousand, one hundred sixty-five 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 128394938360 cubic inches would be around 420.4 feet tall.

Recreational maths with 128394938360

• 128394938360 backwards is 063839493821
• The number of decimal digits it has is: 12
• The sum of 128394938360's digits is 56
• More coming soon!