18000728148

Names of 18000728148

• Cardinal: 18000728148 can be written as Eighteen billion, seven hundred twenty-eight thousand, one hundred forty-eight.

Scientific notation

• Scientific notation: 1.8000728148 × 10¹⁰

Factors of 18000728148

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 115389301

Divisors of 18000728148

• Number of divisors d(n): 24
• Complete list of divisors:
  1 2 3 4 6 12 13 26 39 52 78 156 115389283 230778566 346167849 461557132 692335698 1384671396 1500060679 3000121358 4500182037 6000242716 9000364074 18000728148
• Sum of all divisors σ(n): 45232599328
• Sum of proper divisors (its aliquot sum) s(n): 27231871180
• 18000728148 is an abundant number, because the sum of its proper divisors (27231871180) is greater than itself. Its abundance is 9231143032

Bases of 18000728148

• Binary: 10000110000111011010101000001010100₂
• Hexadecimal: 0x430ED5054
• Base-36: 89P62QC

Squares and roots of 18000728148

• 18000728148 squared (18000728148²) is 324026213858199509904
• 18000728148 cubed (18000728148³) is 5832707788487159598528737577792
• The square root of 18000728148 is 134166.7922699205
• The cube root of 18000728148 is 2620.7767323917

Scales and comparisons

• 18,000,728,148 seconds is equal to 572 years, 19 weeks, 18 hours, 15 minutes, 48 seconds.
• To count from 1 to 18,000,728,148 would take you about one thousand, one hundred forty-four 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 18000728148 cubic inches would be around 218.4 feet tall.

Recreational maths with 18000728148

• 18000728148 backwards is 84182700081
• 18000728148 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18000728148's digits is 39
• More coming soon!