228 = 1 × 23 × 4 + 5 + 6 × 7 + 89
228 = 9 + 87 + 65 + 4 + 3 × 21
228 = 0^6 − 1^7 + 2^9 − 3^8 + 4^2 + 5^5 + 6^1 + 7^4 + 8^0 + 9^3
228 divides 37^2 - 1.
228 = (1 + 1) × (111 + 1 + 1 + 1)
Numbers k such that k^4 + 1 is prime.
The ring of integers of the field Q(sqrt(-228)) has class number 4.
Factors: 1, 2, 3, 4, 6, 12, 19, 38, 57, 76, 114, 228
Two hundred twenty-eight
Representations, Binary to Hexadecimal:
11100100_2
22110_3
3210_4
1403_5
1020_6
444_7
344_8
273_9
198_11
170_12
147_13
124_14
103_15
e4_16
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