<!DOCTYPE html>
<html>
<head>
<title>Armstrong number</title>
</head>
<body>
<script type="text/javascript">
var b,z,c=0;
var a=prompt("Enter a number");
z=a;
while(z>0)
{
b=z%10;
c=c+(b*b*b);
z=parseInt(z/10);
}
if (a==c)
alert("number is a Armstrong");
else
alert("number is not Armstrong");
</script>
</body>
</html>
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