202_(number)

202 (number)

202 (number)

Natural number

202 (two hundred [and] two) is the natural number following 201 and preceding 203.

Quick Facts ← 201 202 203 →, Cardinal ...

In mathematics

202 is a Smith number, meaning that its digit sum and the sum of digits of its prime factors are equal.[1] It is also a strobogrammatic number, meaning that when shown on a seven-segment display, turning the display upside-down shows the same number.[2]

There are exactly 202 partitions of 32 (a power of two) into smaller powers of two.[3] There are also 202 distinct (non-congruent) polygons that can be formed by connecting all eight vertices of a regular octagon into a cycle,[4] and 202 distinct (non-isomorphic) directed graphs on four unlabeled vertices, not having any isolated vertices.[5]

See also

References

  1. [1]
    Sloane, N. J. A. (ed.). "Sequence A006753 (Smith (or joke) numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  2. [2]
    Sloane, N. J. A. (ed.). "Sequence A018846 (Strobogrammatic numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  3. [3]
    Sloane, N. J. A. (ed.). "Sequence A002577 (Number of partitions of 2^n into powers of 2)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  4. [4]
    Sloane, N. J. A. (ed.). "Sequence A000940 (Number of n-gons with n vertices)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  5. [5]
    Sloane, N. J. A. (ed.). "Sequence A053598 (Number of n-node unlabeled digraphs without isolated nodes)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
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