273 (number)


273 is the natural number following 272 and preceding 274.
273 is a figurate number, a truncated triangular pyramid number.
There are 273 different ternary trees with five nodes.

In other fields

The zero of the Celsius temperature scale is 273 kelvins. Thus, absolute zero is approximately −273 °C. The freezing temperature of water and the thermodynamic temperature of the triple point of water are both approximately 0 °C or 273 K.