304147 has 4 divisors (see below), whose sum is σ = 322056. Its totient is φ = 286240.

The previous prime is 304127. The next prime is 304151. The reversal of 304147 is 741403.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-304147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (304127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8929 + ... + 8962.

It is an arithmetic number, because the mean of its divisors is an integer number (80514).

2³⁰⁴¹⁴⁷ is an apocalyptic number.

304147 is a deficient number, since it is larger than the sum of its proper divisors (17909).

304147 is a wasteful number, since it uses less digits than its factorization.

304147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17908.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 304147 is about 551.4952402333. The cubic root of 304147 is about 67.2503443366.

The spelling of 304147 in words is "three hundred four thousand, one hundred forty-seven", and thus it is an iban number.