1020 = 1 + 2 × 3 + 4 × 56 + 789
1020 = 987 + 6 + 5 × 4 + 3 × 2 + 1
1020 = 0^4 + 1^7 + 2^5 + 3^9 − 4^8 + 5^3 + 6^6 + 7^2 + 8^0 + 9^1
1020 divides 13^4 - 1.
Number of vertices in a hexagon when n internal hexagons are drawn between the 6n points that divide each side into n+1 equal parts (n= 13 )
Numbers of edges of regular polygon constructible with unmarked straightedge and compass.
1020 cannot be written as a sum of 3 squares. (Integers that are not a sum of three squares)
Factors: 1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020
One thousand, twenty
Representations, Binary to Hexadecimal:
1111111100_2
1101210_3
33330_4
13040_5
4420_6
2655_7
1774_8
1353_9
848_11
710_12
606_13
52c_14
480_15
3fc_16
Undergraduate Texts in Mathematics
Graduate Studies in Mathematics

