Английская Википедия:7744

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Шаблон:About Шаблон:Infobox number 7744 is the natural number following 7743 and preceding 7745.

In mathematics

7744 is:

  • the square of 88, and is the smallest nonzero square each of whose decimal digits occur exactly twice.[1]
  • the sum of two fifth powers: 7744 = 65 + (−2)5.[2]
  • a Harshad number in bases 5, 9, 10, 12, 14 and 15.
  • the aliquot sum of both 10316 and 15482.
  • part of the 29-aliquot tree.

The complete aliquot sequence starting at 7716 is: 7716, 10316, 7744, 9147, 3053, 115, 29, 1, 0

References

Шаблон:Reflist