1220344404 has 48 divisors (see below), whose sum is σ = 2888172672. Its totient is φ = 401006592.

The previous prime is 1220344403. The next prime is 1220344421. The reversal of 1220344404 is 4044430221.

It is a happy number.

1220344404 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220344403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259377 + ... + 264039.

It is an arithmetic number, because the mean of its divisors is an integer number (60170264).

Almost surely, 2^1220344404 is an apocalyptic number.

It is an amenable number.

1220344404 is an abundant number, since it is smaller than the sum of its proper divisors (1667828268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220344404 is a wasteful number, since it uses less digits than its factorization.

1220344404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4976 (or 4974 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 1220344404 is about 34933.4281741715. The cubic root of 1220344404 is about 1068.6302687526.

Adding to 1220344404 its reverse (4044430221), we get a palindrome (5264774625).

The spelling of 1220344404 in words is "one billion, two hundred twenty million, three hundred forty-four thousand, four hundred four".