305982 has 24 divisors (see below), whose sum is σ = 673920. Its totient is φ = 100320.

The previous prime is 305971. The next prime is 305999. The reversal of 305982 is 289503.

305982 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1507 + ... + 1697.

It is an arithmetic number, because the mean of its divisors is an integer number (28080).

2³⁰⁵⁹⁸² is an apocalyptic number.

305982 is an abundant number, since it is smaller than the sum of its proper divisors (367938).

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

305982 is a wasteful number, since it uses less digits than its factorization.

305982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 305982 is about 553.1563974140. The cubic root of 305982 is about 67.3853196755.

The spelling of 305982 in words is "three hundred five thousand, nine hundred eighty-two".