305018 has 8 divisors (see below), whose sum is σ = 522912. Its totient is φ = 130716.

The previous prime is 305017. The next prime is 305021. The reversal of 305018 is 810503.

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

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 304987 and 305005.

It is not an unprimeable number, because it can be changed into a prime (305017) 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, 10880 + ... + 10907.

It is an arithmetic number, because the mean of its divisors is an integer number (65364).

2³⁰⁵⁰¹⁸ is an apocalyptic number.

305018 is a deficient number, since it is larger than the sum of its proper divisors (217894).

305018 is a wasteful number, since it uses less digits than its factorization.

305018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21796.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 305018 is about 552.2843470532. The cubic root of 305018 is about 67.3144791398.

The spelling of 305018 in words is "three hundred five thousand, eighteen".