It's about 8,000 times the number of Escalators in the State of Wyoming.
In other words, the count of Escalators in the State of Wyoming is 0.0001 times 15,000.(2013 figures)
There are only two escalators in the State of Wyoming (although there are apparently plenty of elevators). It is speculated that the lack of escalators is due to the older age of the buildings and the abundance of cheap land resulting in single-story structures. At the time the last count of escalators was made, the state had a population of just 576,000 people.
It's about 3,000 times the number of Living U.S. Presidents.
In other words, the count of Living U.S. Presidents is 0.0003 times 15,000.(a.k.a. Presidents of the United States; a.k.a. Presidents of the United States of America; a.k.a. POTUS), (2016 figures) (including current)
As of this writing, there are five living United States Presidents — President Carter, President Clinton, President Obama, and the two Presidents Bush. At no point in U.S. history have their been more than six (6) living presidents, this circumstance having occurred three times.
It's about 1,500 times the number of Symphonies Composed by Beethoven.
In other words, 15,000 is 1,666.666666670 times the count of Symphonies Composed by Beethoven, and the count of Symphonies Composed by Beethoven is 0.000599999999999 times that amount.(a.k.a. Ludwig van Beethoven)
Over the course of his life, Beethoven composed nine symphonies over the course of a twenty-four year period. After his death in early 1827, an estimated 20,000 Austrian citizens attended his public funeral.
It's about 1,000 times the number of Living Kings and Queens.
In other words, the count of Living Kings and Queens is 0.001 times 15,000.(2015 figures) (distinct Monarchs)
It's about 550 times the number of Countries in the European Union.
In other words, the count of Countries in the European Union is 0.0019 times 15,000.(a.k.a. EU) (2016 figures)
It's about 300 times the number of Teeth in a Great White Shark's Mouth.
In other words, 15,000 is 310 times the count of Teeth in a Great White Shark's Mouth, and the count of Teeth in a Great White Shark's Mouth is 0.0032 times that amount.(Carcharodon carcharias) (average; including developing rows)
It's about 300 times the number of Countries in Africa.
In other words, 15,000 is 280 times the count of Countries in Africa, and the count of Countries in Africa is 0.0036 times that amount.(2016 figures) (sovereign states recognized by the UN only)
The continent of Africa includes 54 sovereign countries recognized by the United Nations as of 2016. It is the second-most populous continent in the world, with 1.1 billion inhabitants.