304087 has 4 divisors (see below), whose sum is σ = 347536. Its totient is φ = 260640.

The previous prime is 304081. The next prime is 304091. The reversal of 304087 is 780403.

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

It is a cyclic number.

It is not a de Polignac number, because 304087 - 2⁷ = 303959 is a prime.

304087 is a lucky number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21714 + ... + 21727.

It is an arithmetic number, because the mean of its divisors is an integer number (86884).

2³⁰⁴⁰⁸⁷ is an apocalyptic number.

304087 is a deficient number, since it is larger than the sum of its proper divisors (43449).

304087 is an equidigital number, since it uses as much as digits as its factorization.

304087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43448.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 304087 is about 551.4408399820. The cubic root of 304087 is about 67.2459218194.

The spelling of 304087 in words is "three hundred four thousand, eighty-seven".