155729369680

Names of 155729369680

• Cardinal: 155729369680 can be written as One hundred fifty-five billion, seven hundred twenty-nine million, three hundred sixty-nine thousand, six hundred eighty.

Scientific notation

• Scientific notation: 1.5572936968 × 10¹¹

Factors of 155729369680

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 84635557

Divisors of 155729369680

• Number of divisors d(n): 40
• Complete list of divisors:
  1 2 4 5 8 10 16 20 23 40 46 80 92 115 184 230 368 460 920 1840 84635527 169271054 338542108 423177635 677084216 846355270 1354168432 1692710540 1946617121 3385421080 3893234242 6770842160 7786468484 9733085605 15572936968 19466171210 31145873936 38932342420 77864684840 155729369680
• Sum of all divisors σ(n): 377812996992
• Sum of proper divisors (its aliquot sum) s(n): 222083627312
• 155729369680 is an abundant number, because the sum of its proper divisors (222083627312) is greater than itself. Its abundance is 66354257632

Bases of 155729369680

• Binary: 10010001000010001100011001101001010000₂
• Hexadecimal: 0x2442319A50
• Base-36: 1ZJH8UOG

Squares and roots of 155729369680

• 155729369680 squared (155729369680²) is 24251636580930103302400
• 155729369680 cubed (155729369680³) is 3776692078456675295420038431232000
• The square root of 155729369680 is 394625.6069745095
• The cube root of 155729369680 is 5380.0978603279

Scales and comparisons

• 155,729,369,680 seconds is equal to 4,951 years, 37 weeks, 6 hours, 14 minutes, 40 seconds.
• To count from 1 to 155,729,369,680 would take you about nine thousand, nine hundred three 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 155729369680 cubic inches would be around 448.3 feet tall.

Recreational maths with 155729369680

• 155729369680 backwards is 086963927551
• The number of decimal digits it has is: 12
• The sum of 155729369680's digits is 61
• More coming soon!