Bangalore: It is on September 4, way back in 1998, Google got incorporated by Larry Page and Sergey Brin, the Ph.D. students at Stanford University. The company, which started its humble beginning from Susan Wojcicki’s garage in Menlo Park, California, has more than 70 offices in more than 40 global locations now, including London, with their headquarters - known as the Googleplex - in Mountain View, California.

Though papers to incorporate the company were filed on September 4, 1998, it got incorporated three days later and the domain was registered on September 15. Google, however, officially celebrates the event with a Google Doodle on September 27. The change in date is an attempt by Google date was to gain media coverage, at a time when Yahoo was gaining ground on Google.

Google is now world's number one search engine. Its name has become so synonymous with search that it is now used as a verb in its own right. In January 2013, Google announced it had earned $50 billion in annual revenue for the year of 2012. This marked the first time the company had reached this feat, topping their 2011 total of $38 billion.

Read on to know 15 mind-blowing facts about Google on its 15^th birthday, compiled by Business Insider.

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