27

27 (twenty-seven) is a positive integer following 26 and preceding 28. Its ordinal form is written "27th" or "twenty-seventh."

Properties

 * 27 is an  and a perfect power.
 * 27 is the 3rd.
 * 27 is equal to triangle(3) in Steinhaus-Moser notation.
 * 27 can be named "boogathree" with the booga- prefix or "fzthree" with the fz- prefix.

In googology
In Greek-based number-naming systems, 27 is associated with prefix "heptaicosa-", and with prefix "septemviginti-" in Latin systems.

Since 27 is equal to 3 3-ated to 3 ({3, 3, 3} in the old version of BEAF), it occurs naturally when plugging threes into googological functions based on hyper-operators. For example, tritri is a power tower of  threes.