Numbers 48,000s

A page of the Numeropedia - the Special Encyclopedia of Numbers

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48,135

[Math.]  The ratio 48135/9627 = 5, using each of 9 digits 1-9 once, shows how to arrange a 9-book set on 2 shelves to mark the book #5.

 

48,222

[Zip]  J. W. Westcott II, Marine P.O., Detroit, Michigan 48222, is the world’s only mail boat (floating post office) delivering mails to ships in the Great Lakes while they are still underway.

 

48,265

[Math.]  Two multiples of number 6895, 6895×2 = 13,790 and 6895×7 = 48,265, use each of 10 digits 0-9 once.

 

48,444

[Zip]  U.S. Postal Zip Code: Imlay City, Kentucky 48444.

 

48,611

[Math.]  The 5000th prime number.

 

48,615

[Math.]  The ratio 48615/9723 = 5, using each of 9 digits 1-9 once, shows how to arrange a 9-book set on 2 shelves to mark the book #5.

 

48,618

[Math.]  Two consecutive sums of consecutive numbers:

1296+1297+…+1332 = 1333+1334+…+1368 = 48,618.

 

48,765

[Math.]  Two multiples of number 9753, 9753×4 = 39,012 and 9753×5 = 48,765, use each of 10 digits 0-9 once.

 

48,841

[Math.]  Reversible numbers and their squares: 1222 = 14884 and 2212 = 48841.

 

48,852

[Math.]  488522 = 2,386,517,904, a square number using each of 10 digits 0-9 once. (The 20th of 87 such numbers).

 

48,888

[Zip]  U.S. Postal Zip Code: Stanton, Michigan 48888.

 

48,951

[Math.] 

7,683,984 = 1584×4851 = 27722

782432784 = 15984×48951 = 279722

78384320784 = 159984×489951 = 2799722

7839843200784 = 1599984×4899951 = 27999722

783998432000784 = 15999984×48999951 = 279999722

7839…9984320000784 = 159…999984×489…999951 = 279…9999722

...

 

48,976  

[Math.]  The 2nd known amicable/sociable number chain: 14316 → 19116 → 31704 → 47616 → 83328 → 177792 → 295488 → 629072 → 589786 → 294896 → 358336 → 418904 → 366556 → 274924 → 275444 → 243760 → 376736 → 381028 → 285778 → 152990 → 122410 → 97946 → 48976 → 45946 → 22976 → 22744 → 19916 → 17716 → 14316. (of 28 links, currently the longest, found by Poulet, 1918)

 

48nnn

[Zip]  U.S. Postal Zip Codes of Michigan: 48nnn and 49nnn.