An Odd Even Number

What is it about the figure 350? Why is it the go-to pluck-out-of-thin-air figure for politicians when they're lying to their voting public in order to convince the hoi polloi that they can do no wrong? Two instances of the misuse of this particular multiplicand spring to mind, its abusers separated by a decade and the Atlantic Ocean, but who both share some pretty similar characteristics: both are right wing, privileged inheritees, both  are serial philanderers and both have stupid haircuts. That's right, people: Boris Johnson and Donald J. Trump. Johnson famously came up with the entirely fictitious figure of £350mn per week being paid out by the UK to the EU whilst we were still members of the alliance: we weren't. He also, infamously, claimed that his government would divert said amount into the NHS to try and reverse the problems that the Tory government were largely responsible for anyway: he/they didn't, to notorious effect, but they still convinced enough voters to force us out of the Union via the Cameron referendum. Trump has more recently claimed that the US has funded Ukraine in their fight against the Russian invasion to the tune of $350bn: they haven't; it's somewhat less than half that figure. And these are but two - albeit pretty significant - lies in the pantheon of untruths these two opportunist psychopaths cast as their versions of 'reality'. Neither man should ever have been allowed anywhere near high office. Indeed neither should have any jurisdiction over anything more complex or important than a lemonade stall at a village fete. At least Johnson is safely back in his bubble of self-interest and has enough cashflow to keep him out of our hair, for the moment, anyway. But Trump? God help us all...