Thursday, 15 January 2026

What's Special About 28046?


Figure 1

Figure 1 shows a screenshot of a post that I uploaded on the 27th September 2022 in which I noted that the number 26840 contained all the even digits exactly once. Today I turned 28046 days old and this number is the next such number after 26840 with this property. There are only 96 such numbers overall and as I also noted in my blog post at the time:

"I'll only see another six such numbers in my lifetime: 28046, 28064, 28406, 28460, 28604, 28640."

THE 28046 MONUMENT: A COLOSSAL ACHIEVEMENT

So, one down and five to go with the next one only 18 days away. After that, there's a gap of more than a year. The property of these numbers is very much base dependent of course but nonetheless interesting from a recreational mathematical perspective.

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