243982 has 8 divisors (see below), whose sum is σ = 374616. Its totient is φ = 119112.

The previous prime is 243973. The next prime is 243989. The reversal of 243982 is 289342.

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

It is a self number, because there is not a number n which added to its sum of digits gives 243982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1333 + ... + 1504.

It is an arithmetic number, because the mean of its divisors is an integer number (46827).

2²⁴³⁹⁸² is an apocalyptic number.

243982 is a deficient number, since it is larger than the sum of its proper divisors (130634).

243982 is a wasteful number, since it uses less digits than its factorization.

243982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2882.

The product of its digits is 3456, while the sum is 28.

The square root of 243982 is about 493.9453411057. The cubic root of 243982 is about 62.4864610674.

It can be divided in two parts, 243 and 982, that added together give a triangular number (1225 = T₄₉).

The spelling of 243982 in words is "two hundred forty-three thousand, nine hundred eighty-two".