four hundred and twenty-eight.
The number 428 is "four hundred twenty-eight." (It is hyphenated when used as an adjective in English.)
Those letters spell natural.
The letters in "these letters" can spell the phrase "ether settles." The letters can spell shorter words such as trestles, sheerest, shelters, and treeless.
Those letters will spell dollar.
The letters spell 'broccoli'.
Those letters spell psycho.
Those letters will spell carnivore.
Those letters spell delicate.
Those letters will spell artichoke.
Those letters will spell democratic.
Those letters will spell turnip.
The letters can spell the anagram "annotation."