244_(number)

244 (number)

244 (number)

Natural number

244 (two hundred [and] forty-four) is the natural number following 243 and preceding 245.

Quick Facts ← 243 244 245 →, Cardinal ...

Additionally, 244 is:

  • the sum of two nonzero fifth powers (244 = 1 + 243 = 15 + 35).[1]
  • palindromic in bases 3 (1000013), 11 (20211), 60 (4460), 121 (22121), 243 (11243).
  • a Harshad number in bases 3, 9, 11, 61, 62, 81, 121, 122, 123 and 184.
  • the second anti-perfect number, meaning that reversing the digits of the proper divisors of 244 and adding the results gives 244 back again.[2]
  • part of the sequence 1, 2, 4, 8, 61, 221, 244, ... in which each number is formed by reversing the digits of the double of the previous number.[3]
  • the number of non-isomorphic set-systems of weight 8

References

  1. [1]
    Sloane, N. J. A. (ed.). "Sequence A020896 (Positive numbers n such that n = x^5 + y^5 has a solution in nonzero integers x, y)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  2. [2]
    Sloane, N. J. A. (ed.). "Sequence A072228 (Numbers n such that n = the sum of the reverses of the proper divisors of n)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  3. [3]
    Sloane, N. J. A. (ed.). "Sequence A036447 (Double and reverse digits)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
Share this article:

This article uses material from the Wikipedia article 244_(number), and is written by contributors. Text is available under a CC BY-SA 4.0 International License; additional terms may apply. Images, videos and audio are available under their respective licenses.