1220768 has 12 divisors (see below), whose sum is σ = 2403450. Its totient is φ = 610368.

The previous prime is 1220761. The next prime is 1220773. The reversal of 1220768 is 8670221.

It can be written as a sum of positive squares in only one way, i.e., 795664 + 425104 = 892^2 + 652^2 .

It is not an unprimeable number, because it can be changed into a prime (1220761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19043 + ... + 19106.

2^1220768 is an apocalyptic number.

It is an amenable number.

1220768 is a deficient number, since it is larger than the sum of its proper divisors (1182682).

1220768 is an equidigital number, since it uses as much as digits as its factorization.

1220768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38159 (or 38151 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 1220768 is about 1104.8837042875. The cubic root of 1220768 is about 106.8753899191.

Adding to 1220768 its reverse (8670221), we get a palindrome (9890989).

The spelling of 1220768 in words is "one million, two hundred twenty thousand, seven hundred sixty-eight".