400

400 = 2 × 2 × 2 × 2 × 5 × 5

400 = 1 + 2 × 34 × 5 + 6 × 7 + 8 + 9

400 = 9 + 8 + 7 × 6 + 5 × 4 + 321

400 = −0^0 + 1^4 − 2^9 + 3^7 − 4^8 + 5^1 + 6^6 + 7^5 + 8^2 + 9^3

400 = 20² = 7⁰ + 7¹ + 7² + 7³

400 divides 49^2 - 1.

400 = ((1 + 1) × (11 − 1))⁽¹⁺¹⁾

400 = (22 − 2)²

400 = 33 × (3 × 3 + 3) + 3 + 3/3

400 = 444 − 44

400 = 5 × (5 × 5 + 55)

400 = 6 × 66 + 6 − (6 + 6)/6

400 = 7 × (7 × 7 + 7) + 7 + 7/7

400 = (8 + 8) × (8 + 8 + 8) + 8 + 8

400 = (9 + 99/9)((9 + 9)/9)

Factors: 1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400

Four hundred

Representations, Binary to Hexadecimal:

110010000_2
112211_3
12100_4
3100_5
1504_6
1111_7
620_8
484_9
334_11
294_12
24a_13
208_14
1ba_15
190_16

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