304247 has 8 divisors (see below), whose sum is σ = 326400. Its totient is φ = 282744.

The previous prime is 304223. The next prime is 304253. The reversal of 304247 is 742403.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 304247 - 2¹² = 300151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1154 + ... + 1392.

It is an arithmetic number, because the mean of its divisors is an integer number (40800).

2³⁰⁴²⁴⁷ is an apocalyptic number.

304247 is a deficient number, since it is larger than the sum of its proper divisors (22153).

304247 is a wasteful number, since it uses less digits than its factorization.

304247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 304247 is about 551.5858953962. The cubic root of 304247 is about 67.2577139063.

The spelling of 304247 in words is "three hundred four thousand, two hundred forty-seven", and thus it is an iban number.