202 (number)

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201 202 203
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Cardinal two hundred two
Ordinal 202nd
(two hundred second)
Factorization 2 × 101
Divisors 1, 2, 101, 202
Greek numeral ΣΒ´
Roman numeral CCII
Binary 110010102
Ternary 211113
Octal 3128
Duodecimal 14A12
Hexadecimal CA16

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

Contents

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

Related Research Articles

222 is the natural number following 221 and preceding 223.

68 (sixty-eight) is the natural number following 67 and preceding 69. It is an even number.

220 is the natural number following 219 and preceding 221.

300 is the natural number following 299 and preceding 301.

500 is the natural number following 499 and preceding 501.

700 is the natural number following 699 and preceding 701.

600 is the natural number following 599 and preceding 601.

800 is the natural number following 799 and preceding 801.

229 is the natural number following 228 and preceding 230.

100,000 (one hundred thousand) is the natural number following 99,999 and preceding 100,001. In scientific notation, it is written as 105.

235 is the integer following 234 and preceding 236.

225 is the natural number following 224 and preceding 226.

233 is the natural number following 232 and preceding 234.

257 is the natural number following 256 and preceding 258.

209 is the natural number following 208 and preceding 210.

236 is the natural number following 235 and preceding 237. 236 is a happy number.

238 is the natural number following 237 and preceding 239.

244 is the natural number following 243 and preceding 245.

353 is the natural number following 352 and preceding 354. It is a prime number.

888 is the natural number following 887 and preceding 889.

References

  1. Sloane, N. J. A. (ed.). "SequenceA006753(Smith (or joke) numbers)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
  2. Sloane, N. J. A. (ed.). "SequenceA018846(Strobogrammatic numbers)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
  3. Sloane, N. J. A. (ed.). "SequenceA002577(Number of partitions of 2^n into powers of 2)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
  4. Sloane, N. J. A. (ed.). "SequenceA000940(Number of n-gons with n vertices)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
  5. Sloane, N. J. A. (ed.). "SequenceA053598(Number of n-node unlabeled digraphs without isolated nodes)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.