304056405 has 24 divisors (see below), whose sum is σ = 530400312. Its totient is φ = 161126784.

The previous prime is 304056367. The next prime is 304056409. The reversal of 304056405 is 504650403.

It can be written as a sum of positive squares in 4 ways, for example, as 4835601 + 299220804 = 2199^2 + 17298^2 .

It is not a de Polignac number, because 304056405 - 2¹⁴ = 304040021 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304056409) 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, 14454 + ... + 28583.

It is an arithmetic number, because the mean of its divisors is an integer number (22100013).

Almost surely, 2^304056405 is an apocalyptic number.

It is an amenable number.

304056405 is a deficient number, since it is larger than the sum of its proper divisors (226343907).

304056405 is a wasteful number, since it uses less digits than its factorization.

304056405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43205 (or 43202 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 304056405 is about 17437.2132234483. The cubic root of 304056405 is about 672.4366648018.

The spelling of 304056405 in words is "three hundred four million, fifty-six thousand, four hundred five".