1220353204 has 48 divisors (see below), whose sum is σ = 2578262400. Its totient is φ = 493727616.

The previous prime is 1220353193. The next prime is 1220353213. The reversal of 1220353204 is 4023530221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151962 + ... + 159790.

It is an arithmetic number, because the mean of its divisors is an integer number (53713800).

Almost surely, 2^1220353204 is an apocalyptic number.

1220353204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220353204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1289131200).

1220353204 is an abundant number, since it is smaller than the sum of its proper divisors (1357909196).

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

1220353204 is a wasteful number, since it uses less digits than its factorization.

1220353204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8152 (or 8150 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 1220353204 is about 34933.5541278010. The cubic root of 1220353204 is about 1068.6328374055.

Adding to 1220353204 its reverse (4023530221), we get a palindrome (5243883425).

The spelling of 1220353204 in words is "one billion, two hundred twenty million, three hundred fifty-three thousand, two hundred four".