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202 (number)

From Wikipedia, the free encyclopedia
Natural number
← 201202 203 →
Cardinaltwo hundred two
Ordinal202nd
(two hundred second)
Factorization2 × 101
Divisors1, 2, 101, 202
Greek numeralΣΒ´
Roman numeralCCII,ccii
Binary110010102
Ternary211113
Senary5346
Octal3128
Duodecimal14A12
HexadecimalCA16

202 (two hundred [and] two) is thenatural number following201 and preceding203.

In mathematics

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202 is aSmith number, meaning that itsdigit sum and the sum of digits of itsprime factors are equal.[1] It is also astrobogrammatic number, meaning that when shown on aseven-segment display, turning the display upside-down shows the same number.[2]

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

See also

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References

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  1. ^Sloane, N. J. A. (ed.)."Sequence A006753 (Smith (or joke) numbers)".TheOn-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  2. ^Sloane, N. J. A. (ed.)."Sequence A018846 (Strobogrammatic numbers)".TheOn-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  3. ^Sloane, N. J. A. (ed.)."Sequence A002577 (Number of partitions of 2^n into powers of 2)".TheOn-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  4. ^Sloane, N. J. A. (ed.)."Sequence A000940 (Number of n-gons with n vertices)".TheOn-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  5. ^Sloane, N. J. A. (ed.)."Sequence A053598 (Number of n-node unlabeled digraphs without isolated nodes)".TheOn-Line Encyclopedia of Integer Sequences. OEIS Foundation.
0 to 199
200 to 399
400 to 999
1000s and 10,000s
1000s
10,000s
100,000s to 10,000,000,000,000s


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