C(24, 3) -- the number of ways to choose 3 items from a group of 24.
2024 is divisible by 4, so 2024 is a leap year!
It is a Cunningham number because it is one away from a perfect square: 2024 = 45^2 - 1
2024 is a quasi-amicable number (or betrothed pair) with 2295 because the proper divisors of each number is 1 away from the other number.
If you add 2024 to its reversal (4202) you get a palindrome (6226).
It is a pseudo-perfect number because it is equal to the sum of a subset of its proper divisors.
It is an untouchable number because it is not equal to the sum of the proper divisors of any other number.