1220204 has 24 divisors (see below), whose sum is σ = 2256240. Its totient is φ = 576576.

The previous prime is 1220203. The next prime is 1220239. The reversal of 1220204 is 4020221.

1220204 is nontrivially palindromic in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7694 + ... + 7850.

It is an arithmetic number, because the mean of its divisors is an integer number (94010).

2^1220204 is an apocalyptic number.

It is an amenable number.

1220204 is a deficient number, since it is larger than the sum of its proper divisors (1036036).

1220204 is a wasteful number, since it uses less digits than its factorization.

1220204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 1220204 is about 1104.6284443196. The cubic root of 1220204 is about 106.8589284224.

Adding to 1220204 its reverse (4020221), we get a palindrome (5240425).

The spelling of 1220204 in words is "one million, two hundred twenty thousand, two hundred four".