155628744138

Names of 155628744138

• Cardinal: 155628744138 can be written as One hundred fifty-five billion, six hundred twenty-eight million, seven hundred forty-four thousand, one hundred thirty-eight.

Scientific notation

• Scientific notation: 1.55628744138 × 10¹¹

Factors of 155628744138

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 902276

Divisors of 155628744138

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 6 7 9 14 18 21 37 42 63 74 111 126 222 259 333 518 666 777 1369 1554 2331 2738 4107 4662 8214 9583 12321 19166 24642 28749 57498 86247 172494 902227 1804454 2706681 5413362 6315589 8120043 12631178 16240086 18946767 33382399 37893534 56840301 66764798 100147197 113680602 200294394 233676793 300441591 467353586 600883182 701030379 1235148763 1402060758 2103091137 2470297526 3705446289 4206182274 7410892578 8646041341 11116338867 17292082682 22232677734 25938124023 51876248046 77814372069 155628744138
• Sum of all divisors σ(n): 396063656352
• Sum of proper divisors (its aliquot sum) s(n): 240434912214
• 155628744138 is an abundant number, because the sum of its proper divisors (240434912214) is greater than itself. Its abundance is 84806168076

Bases of 155628744138

• Binary: 10010000111100001100100010110111001010₂
• Hexadecimal: 0x243C322DCA
• Base-36: 1ZHTC3II

Squares and roots of 155628744138

• 155628744138 squared (155628744138²) is 24220306001971069363044
• 155628744138 cubed (155628744138³) is 3769375805724821277579425308836072
• The square root of 155628744138 is 394498.0914250409
• The cube root of 155628744138 is 5378.9388156113

Scales and comparisons

• 155,628,744,138 seconds is equal to 4,948 years, 26 weeks, 4 days, 14 hours, 42 minutes, 18 seconds.
• To count from 1 to 155,628,744,138 would take you about nine thousand, eight hundred ninety-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 155628744138 cubic inches would be around 448.2 feet tall.

Recreational maths with 155628744138

• 155628744138 backwards is 831447826551
• The number of decimal digits it has is: 12
• The sum of 155628744138's digits is 54
• More coming soon!