243366 has 16 divisors (see below), whose sum is σ = 497664. Its totient is φ = 79304.

The previous prime is 243343. The next prime is 243367. The reversal of 243366 is 663342.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2³ + 4⁸ + 3⁵ + 3¹¹ + 6³ + 6³ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243367) 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 7 ways as a sum of consecutive naturals, for example, 150 + ... + 713.

It is an arithmetic number, because the mean of its divisors is an integer number (31104).

2²⁴³³⁶⁶ is an apocalyptic number.

243366 is an abundant number, since it is smaller than the sum of its proper divisors (254298).

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

243366 is a wasteful number, since it uses less digits than its factorization.

243366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915.

The product of its digits is 2592, while the sum is 24.

The square root of 243366 is about 493.3213962520. The cubic root of 243366 is about 62.4338286330.

Subtracting from 243366 its sum of digits (24), we obtain a palindrome (243342).

It can be divided in two parts, 24336 and 6, that added together give a palindrome (24342).

The spelling of 243366 in words is "two hundred forty-three thousand, three hundred sixty-six".