Atmega 328p ADC not working

ADMUX = 0;//Channel 0

ADMUX |= (1<<REFS0);//Vref=AVcc

ADCSRA |= (1<<ADPS2)|(1<<ADPS1)|(1<<ADPS0)(1<<ADEN);

//Frequenzvorteiler (128) F_CPU/128=125000 (<200000!!) && ADC Enable

ADCSRA |= (1<<ADSC); // start  

while( ADCSRA & (1<<ADSC) ); //wait for finish

int i = ADC;

char result[6];

sprintf(result,"%d",i);

lcd_string(result);

srand(i);