128439091456

Names of 128439091456

• Cardinal: 128439091456 can be written as One hundred twenty-eight billion, four hundred thirty-nine million, ninety-one thousand, four hundred fifty-six.

Scientific notation

• Scientific notation: 1.28439091456 × 10¹¹

Factors of 128439091456

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 1738

Divisors of 128439091456

• Number of divisors d(n): 81
• Complete list of divisors:
  1 2 4 8 13 16 26 32 52 64 104 128 169 208 256 338 416 676 832 1352 1664 1723 2704 3328 3446 5408 6892 10816 13784 21632 22399 27568 43264 44798 55136 89596 110272 179192 220544 291187 358384 441088 582374 716768 1164748 1433536 2329496 2867072 2968729 4658992 5734144 5937458 9317984 11874916 18635968 23749832 37271936 38593477 47499664 74543872 77186954 94999328 154373908 189998656 308747816 379997312 501715201 617495632 759994624 1003430402 1234991264 2006860804 2469982528 4013721608 4939965056 8027443216 9879930112 16054886432 32109772864 64219545728 128439091456
• Sum of all divisors σ(n): 277775971389
• Sum of proper divisors (its aliquot sum) s(n): 149336879933
• 128439091456 is an abundant number, because the sum of its proper divisors (149336879933) is greater than itself. Its abundance is 20897788477

Bases of 128439091456

• Binary: 1110111100111100100010000000100000000₂
• Hexadecimal: 0x1DE7910100
• Base-36: 1N05BH8G

Squares and roots of 128439091456

• 128439091456 squared (128439091456²) is 16496600214042732199936
• 128439091456 cubed (128439091456³) is 2118808343604503656519695981346816
• 128439091456 is a perfect square number. Its square root is 358384
• The cube root of 128439091456 is 5045.4403368859

Scales and comparisons

• 128,439,091,456 seconds is equal to 4,083 years, 50 weeks, 1 day, 13 hours, 24 minutes, 16 seconds.
• To count from 1 to 128,439,091,456 would take you about eight thousand, one hundred sixty-seven 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 128439091456 cubic inches would be around 420.5 feet tall.

Recreational maths with 128439091456

• 128439091456 backwards is 654190934821
• 128439091456 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 128439091456's digits is 52
• More coming soon!