452

The number 452 is an even natural number that follows 451 and precedes 453. In math it factors as 2^2 × 113. It is not prime and has six divisors: 1, 2, 4, 113, 226, and 452.

In number theory, 452 is a deficient number because the sum of its proper divisors (346) is less than 452. Its Euler totient φ(452) equals 224, and its divisor count d(452) equals 6.

Representations: In base 2, 452 is 111000100_2; in base 16 it is 0x1C4; in Roman numerals it is CDLII.

In science, wavelengths around 452 nanometers lie in the blue portion of the visible spectrum. In history, the year 452 CE is associated with the campaigns of Attila the Hun in Europe, including the period around the Catalaunian Plains.