304986 has 16 divisors (see below), whose sum is σ = 665568. Its totient is φ = 92400.

The previous prime is 304981. The next prime is 305017. The reversal of 304986 is 689403.

It is not an unprimeable number, because it can be changed into a prime (304981) by changing a digit.

304986 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2245 + ... + 2376.

It is an arithmetic number, because the mean of its divisors is an integer number (41598).

2³⁰⁴⁹⁸⁶ is an apocalyptic number.

304986 is an abundant number, since it is smaller than the sum of its proper divisors (360582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

304986 is a wasteful number, since it uses less digits than its factorization.

304986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4637.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 304986 is about 552.2553757095. The cubic root of 304986 is about 67.3121250288.

The spelling of 304986 in words is "three hundred four thousand, nine hundred eighty-six".