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Number 1280

Prime factorization

Factorization 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 5
Divisors 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280
Count of divisors 18
Sum of divisors 3066

Basic properties

Is prime? × NO
Previous integer 1279
Next integer 1281
Previous prime number 1279
Next prime number 1283
Reciprocal 0.00078125
Square 1638400
Square root 35.77708763999664
Natural logarithm 7.154615356913663
Decimal logarithm 3.1072099696478683
Sine -0.9802635041635444
Cosine -0.197695377803855
Tangent 4.958454340475884

Expressions

Binary 10100000000
Octal 2400
Hexadecimal 500