243868 has 12 divisors (see below), whose sum is σ = 437472. Its totient is φ = 118880.

The previous prime is 243863. The next prime is 243871. The reversal of 243868 is 868342.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243863) 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, 580 + ... + 907.

It is an arithmetic number, because the mean of its divisors is an integer number (36456).

2²⁴³⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

243868 is a deficient number, since it is larger than the sum of its proper divisors (193604).

243868 is a wasteful number, since it uses less digits than its factorization.

243868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1532 (or 1530 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

The square root of 243868 is about 493.8299302391. The cubic root of 243868 is about 62.4767273352.

It can be divided in two parts, 243 and 868, that added together give a palindrome (1111).

The spelling of 243868 in words is "two hundred forty-three thousand, eight hundred sixty-eight".