72

72 = 2 × 2 × 2 × 3 × 3

72 = 1 + 2 + 34 + 5 + 6 + 7 + 8 + 9

72 = 9 + 8 + 7 + 6 + 5 + 4 + 32 + 1

72 = 0^8 + 1^9 + 2^4 + 3^5 − 4^7 + 5^6 + 6^0 + 7^2 + 8^3 + 9^1

72 = 6^2 + 6^2

72⁵ = 19⁵ + 43⁵ + 46⁵ + 47⁵ + 67⁵

72 = 11^2 - 7^2 = 19^2 - 17^2

Number that can be expressed as the difference of the squares of primes in just two distinct ways.

Numbers k such that (35*10^k - 11)/3 is prime

Sum of four consecutive primes

Achilles number - powerful but imperfect

Factors: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72

Seventy-two

Representations, Binary to Hexadecimal:

1001000_2
2200_3
1020_4
242_5
200_6
132_7
110_8
80_9
66_11
60_12
57_13
52_14
4c_15
48_16

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