155188442920

Names of 155188442920

• Cardinal: 155188442920 can be written as One hundred fifty-five billion, one hundred eighty-eight million, four hundred forty-two thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.5518844292 × 10¹¹

Factors of 155188442920

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 687

Divisors of 155188442920

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 5 7 8 10 14 20 28 35 40 49 56 70 98 140 196 245 280 343 392 490 673 686 980 1346 1372 1715 1960 2401 2692 2744 3365 3430 4711 4802 5384 6730 6860 9422 9604 12005 13460 13720 16807 18844 19208 23555 24010 26920 32977 33614 37688 47110 48020 65954 67228 84035 94220 96040 117649 131908 134456 164885 168070 188440 230839 235298 263816 329770 336140 461678 470596 588245 659540 672280 823543 923356 941192 1154195 1176490 1319080 1615873 1647086 1846712 2308390 2352980 3231746 3294172 4117715 4616780 4705960 5764801 6463492 6588344 8079365 8235430 9233560 11311111 11529602 12926984 16158730 16470860 22622222 23059204 28824005 32317460 32941720 45244444 46118408 56555555 57648010 64634920 79177777 90488888 113111110 115296020 158355554 226222220 230592040 316711108 395888885 452444440 554244439 633422216 791777770 1108488878 1583555540 2216977756 2771222195 3167111080 3879711073 4433955512 5542444390 7759422146 11084888780 15518844292 19398555365 22169777560 31037688584 38797110730 77594221460 155188442920
• Sum of all divisors σ(n): 407974956660
• Sum of proper divisors (its aliquot sum) s(n): 252786513740
• 155188442920 is an abundant number, because the sum of its proper divisors (252786513740) is greater than itself. Its abundance is 97598070820

Bases of 155188442920

• Binary: 10010000100001111100111011011100101000₂
• Hexadecimal: 0x2421F3B728
• Base-36: 1ZAJ6WX4

Squares and roots of 155188442920

• 155188442920 squared (155188442920²) is 24083452815934098126400
• 155188442920 cubed (155188442920³) is 3737473542642102053570505345088000
• The square root of 155188442920 is 393939.6437526947
• The cube root of 155188442920 is 5373.8613681277

Scales and comparisons

• 155,188,442,920 seconds is equal to 4,934 years, 26 weeks, 4 days, 12 hours, 48 minutes, 40 seconds.
• To count from 1 to 155,188,442,920 would take you about nine thousand, eight hundred sixty-nine 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 155188442920 cubic inches would be around 447.8 feet tall.

Recreational maths with 155188442920

• 155188442920 backwards is 029244881551
• 155188442920 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 155188442920's digits is 49
• More coming soon!