20e

20e denotes the product of 20 and Euler's number e. Euler's number e is the base of natural logarithms, and it is an irrational and transcendental constant approximately equal to 2.718281828459045. Therefore 20e equals 20 × e, which is approximately 54.3656365691809.

Because e is transcendental, the product 20e is also transcendental (and thus irrational). The expression appears in contexts where e is multiplied by a constant, such as in algebraic or calculus-based formulas that involve exponential growth, decay, or natural exponential functions.

In broader usage, e is central to many mathematical concepts, including the exponential function exp(x) = e^x, differential equations, and models of continuous growth or decay. The specific constant 20e may arise as a numeric constant in calculations, but it is not a standard named value with a specialized interpretation beyond being twenty times e.

Notes on notation: in scientific notation, the letter e is used to indicate an exponent (for example, 1.23e4 equals 1.23 × 10^4). On its own, 20e is not a valid scientific notation; it should be followed by an exponent to form a number in that format.

See also: Euler's number, exponential function, transcendental number.