18129257928

Names of 18129257928

• Cardinal: 18129257928 can be written as Eighteen billion, one hundred twenty-nine million, two hundred fifty-seven thousand, nine hundred twenty-eight.

Scientific notation

• Scientific notation: 1.8129257928 × 10¹⁰

Factors of 18129257928

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 45864

Divisors of 18129257928

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 8 9 12 18 24 36 37 72 74 111 148 149 222 296 298 333 444 447 596 666 888 894 1192 1332 1341 1788 2664 2682 3576 5364 5513 10728 11026 16539 22052 33078 44104 45673 49617 66156 91346 99234 132312 137019 182692 198468 274038 365384 396936 411057 548076 822114 1096152 1644228 1689901 3288456 3379802 5069703 6759604 6805277 10139406 13519208 13610554 15209109 20278812 20415831 27221108 30418218 40557624 40831662 54442216 60836436 61247493 81663324 121672872 122494986 163326648 244989972 251795249 489979944 503590498 755385747 1007180996 1510771494 2014361992 2266157241 3021542988 4532314482 6043085976 9064628964 18129257928
• Sum of all divisors σ(n): 50766651000
• Sum of proper divisors (its aliquot sum) s(n): 32637393072
• 18129257928 is an abundant number, because the sum of its proper divisors (32637393072) is greater than itself. Its abundance is 14508135144

Bases of 18129257928

• Binary: 10000111000100101101000010111001000₂
• Hexadecimal: 0x4389685C8
• Base-36: 8BTOWY0

Squares and roots of 18129257928

• 18129257928 squared (18129257928²) is 328669993019950853184
• 18129257928 cubed (18129257928³) is 5958543076652648667256396042752
• The square root of 18129257928 is 134644.9327973393
• The cube root of 18129257928 is 2626.9996157633

Scales and comparisons

• 18,129,257,928 seconds is equal to 576 years, 23 weeks, 4 days, 8 hours, 58 minutes, 48 seconds.
• To count from 1 to 18,129,257,928 would take you about one thousand, one hundred fifty-two 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 18129257928 cubic inches would be around 218.9 feet tall.

Recreational maths with 18129257928

• 18129257928 backwards is 82975292181
• The number of decimal digits it has is: 11
• The sum of 18129257928's digits is 54
• More coming soon!