Number
2,020
2,020 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 4
- Digital root
- 4
- Palindrome
- No
- Divisor count
- 12
- σ(n) — sum of divisors
- 4,284
Primality
Prime factorization: 2 2 × 5 × 101
Divisors & multiples
Aliquot sum (sum of proper divisors):
2,264
First multiples
Representations
- In words
- two thousand twenty
- Ordinal
- 2020th
- Roman numeral
- MMXX
- Binary
- 11111100100
- Octal
- 3744
- Hexadecimal
- 7E4
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 2020, here are decompositions:
- 3 + 2017 = 2020
- 17 + 2003 = 2020
- 23 + 1997 = 2020
- 41 + 1979 = 2020
- 47 + 1973 = 2020
- 71 + 1949 = 2020
- 89 + 1931 = 2020
- 107 + 1913 = 2020
Showing the first eight; more decompositions exist.
Unicode codepoint
ߤ
U+07E4
Other letter (Lo)
UTF-8 encoding: DF A4 (2 bytes).
Hex color
#0007E4
RGB(0, 7, 228)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.7.228.