1205304404 has 6 divisors (see below), whose sum is σ = 2109282714. Its totient is φ = 602652200.

The previous prime is 1205304379. The next prime is 1205304433. The reversal of 1205304404 is 4044035021.

It can be written as a sum of positive squares in only one way, i.e., 1204090000 + 1214404 = 34700^2 + 1102^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1205304404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 150663047 + ... + 150663054.

It is an arithmetic number, because the mean of its divisors is an integer number (351547119).

Almost surely, 2^1205304404 is an apocalyptic number.

It is an amenable number.

1205304404 is a deficient number, since it is larger than the sum of its proper divisors (903978310).

1205304404 is a wasteful number, since it uses less digits than its factorization.

1205304404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301326105 (or 301326103 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 1205304404 is about 34717.4942068116. The cubic root of 1205304404 is about 1064.2220373012. Note that the first 3 decimals are identical.

Adding to 1205304404 its reverse (4044035021), we get a palindrome (5249339425).

The spelling of 1205304404 in words is "one billion, two hundred five million, three hundred four thousand, four hundred four".