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190 (number)

From Wikipedia, the free encyclopedia
Natural number
← 189190 191 →
Cardinalone hundred ninety
Ordinal190th
(one hundred ninetieth)
Factorization2 × 5 × 19
Divisors1, 2, 5, 10, 19, 38, 95, 190
Greek numeralΡϞ´
Roman numeralCXC,cxc
Binary101111102
Ternary210013
Senary5146
Octal2768
Duodecimal13A12
HexadecimalBE16

190 (one hundred [and] ninety) is thenatural number following189 and preceding191.

In mathematics

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190 is atriangular number, ahexagonal number, and acentered nonagonal number, the fourthfigurate number (after 1, 28, and 91) with that combination of properties.[1] It is also atruncated square pyramid number.[2]

See also

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Wikimedia Commons has media related to190 (number).

References

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  1. ^Sloane, N. J. A. (ed.),"Sequence A272399 (The intersection of hexagonal numbers (A000384) and centered 9-gonal numbers (A060544))",TheOn-Line Encyclopedia of Integer Sequences, OEIS Foundation
  2. ^Sloane, N. J. A. (ed.),"Sequence A050409 (Truncated square pyramid numbers: a(n) = Sum_{k = n..2*n} k^2)",TheOn-Line Encyclopedia of Integer Sequences, OEIS Foundation
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