1204105356 has 72 divisors (see below), whose sum is σ = 3147471600. Its totient is φ = 387835776.

The previous prime is 1204105351. The next prime is 1204105363. The reversal of 1204105356 is 6535014021.

1204105356 is a `hidden beast` number, since 1 + 204 + 105 + 356 = 666.

It is not an unprimeable number, because it can be changed into a prime (1204105351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 195435 + ... + 201501.

Almost surely, 2^1204105356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1204105356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1573735800).

1204105356 is an abundant number, since it is smaller than the sum of its proper divisors (1943366244).

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

1204105356 is a wasteful number, since it uses less digits than its factorization.

1204105356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6263 (or 6258 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1204105356 is about 34700.2212673061. The cubic root of 1204105356 is about 1063.8690208963.

Adding to 1204105356 its reverse (6535014021), we get a palindrome (7739119377).

The spelling of 1204105356 in words is "one billion, two hundred four million, one hundred five thousand, three hundred fifty-six".