Laser display by Christopher Short. GLOW Botanica, Santa Fe Botanical Garden, Santa Fe, New Mexico, 2019.
Photo by I. Peterson
January 3, 2020
January 2, 2020
January 1, 2020
2020
2020 = 101 x 5 x 2 x 2
2020 is the sum of the squares of four consecutive primes: 172 + 192 + 232 + 292 = 2020 (A133524).
2020 is a multiple of 4 whose digits add up to 4 (A063997).
The sum of the digits of 2020 is equal to the number of digits in 2020 (A061384).
2020 is a non-palindromic number divisible by its reverse (0202) (A118959). The reversal of 2020 is a palindrome (A273239).
The year 2020 has one blue moon (A125680). It is also a year in which February has five Saturdays (A176478).
2020 is the sum of the squares of four consecutive primes: 172 + 192 + 232 + 292 = 2020 (A133524).
2020 is a multiple of 4 whose digits add up to 4 (A063997).
The sum of the digits of 2020 is equal to the number of digits in 2020 (A061384).
2020 is a non-palindromic number divisible by its reverse (0202) (A118959). The reversal of 2020 is a palindrome (A273239).
The year 2020 has one blue moon (A125680). It is also a year in which February has five Saturdays (A176478).
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