Yes - this is known as "pooling" or "syndication". A group of family members, friends, or colleagues put funds together to purchase more tickets, and then equally share out any prizes they win. Bear in mind, one nominated person will have to act as the ticket holder, and it's important that they are reliable and trustworthy. You should also have a binding legal agreement.
Mega Millions' second-largest jackpot, $648 million, was for the December 17, 2013 drawing. Two winning tickets, one each from California and Georgia, were sold. The holder of the Georgia ticket claimed the next morning; they selected the cash option, which amounted to $173,819,742.50 before withholdings. The holder of the California ticket claimed on January 3, 2014. (The California ticket holder received an equal share, but potentially a larger cash-option amount, as California lottery winnings are exempt from state income tax)." 
When it was launched in 1992 Powerball became the first game to use two drums. Using two drums to draw numbers from offers more manipulation by simultaneously allowing high jackpot odds, numerous prize levels and low overall odds of winning (as explained later, a ticket can win by matching only one number). The two-drum concept was suggested by Steve Caputo of the Oregon Lottery. The two-drum concept has since been used by The Big Game (now Mega Millions) in the US, Australia's Powerball, Thunderball in the UK, Eurojackpot and EuroMillions (unlike most two-drum games, Euromillions selects two numbers called "Lucky Stars" from the 2nd drum; jackpot winners must make a total of seven matches).
Yes! Powerball tickets are available to buy in 47 US states and territories and theLotter’s service makes tickets available worldwide. theLotter local offices buy official US Powerball lottery tickets on your behalf from inside the US, and with theLotter’s See Your Ticket Service, you will see a scan of any and all Powerball tickets you buy in your theLotter account before the relevant draw.
Presumably due to their experience with the Power Play option for Powerball, all 23 lotteries joining Mega Millions on January 31, 2010 immediately offered Megaplier to their players. The Megaplier continues to be drawn by Texas Lottery computers, as California does not offer the multiplier. Montana, offering Powerball before the expansion date, became the 24th lottery to offer the Megaplier, followed by Nebraska (the 25th), Oregon (the 26th), Arizona (as the 27th) and Maine (as the 28th lottery to offer the Megaplier option). After Colorado and South Dakota joined Mega Millions, this raised the number of lotteries offering the Megaplier to 37.
Nowadays there is a plethora of websites to choose from and new companies offer online lottery ticket service every day. Due to the nature of this industry and the fact that newcomers are popping up all over, it is advisable to be diligent and check out the lottery ticket provider carefully before you decide to buy Powerball tickets online with them. This is easily done with a quick google search and an investment of 5 minutes on your part. Trust us, the five minutes is worth it to be sure that when/if you play Powerball online and win, you actually receive your jackpot winnings.