207 (number)

207 (two hundred [and] seven) is the natural number following 206 and preceding 208. It is an odd composite number with a prime factorization of ${\displaystyle 3^{2}\cdot 23}$.

← 206 207 208 →
← 200 201 202 203 204 205 206 207 208 209 → List of numbers Integers ← 0 100 200 300 400 500 600 700 800 900 →
Cardinal	two hundred seven
Ordinal	207th (two hundred seventh)
Factorization	32 × 23
Divisors	1, 3, 9, 23, 69, 207
Greek numeral	ΣΖ´
Roman numeral	CCVII
Binary	110011112
Ternary	212003
Senary	5436
Octal	3178
Duodecimal	15312
Hexadecimal	CF16

In Mathematics

• 207 is a Wedderburn-Etherington number.^[1]

• There are exactly 207 different matchstick graphs with eight edges.^[2][3]

• 207 is a deficient number, as 207's proper divisors (divisors not including the number itself) only add up to 105: ${\displaystyle 1+3+9+23+69=105<207}$.

See also

• Peugeot 207
• List of highways numbered 207

References

1. Sloane, N. J. A. (ed.). "Sequence A001190 (Wedderburn-Etherington numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
2. Sloane, N. J. A. (ed.). "Sequence A066951 (Number of nonisomorphic connected graphs that can be drawn in the plane using n unit-length edges)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
3. Salvia, Raffaele (2013). "A catalog for matchstick graphs". arXiv:1303.5965 [math.CO].