243364 has 12 divisors (see below), whose sum is σ = 464688. Its totient is φ = 110600.

The previous prime is 243343. The next prime is 243367. The reversal of 243364 is 463342.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a d-powerful number, because it can be written as 2⁷ + 4⁴ + 3⁴ + 3¹¹ + 6³ + 4⁸ .

It is not an unprimeable number, because it can be changed into a prime (243367) 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, 2722 + ... + 2809.

It is an arithmetic number, because the mean of its divisors is an integer number (38724).

2²⁴³³⁶⁴ is an apocalyptic number.

It is an amenable number.

243364 is a deficient number, since it is larger than the sum of its proper divisors (221324).

243364 is a wasteful number, since it uses less digits than its factorization.

243364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5546 (or 5544 counting only the distinct ones).

The product of its digits is 1728, while the sum is 22.

The square root of 243364 is about 493.3193691717. The cubic root of 243364 is about 62.4336576039.

Subtracting from 243364 its sum of digits (22), we obtain a palindrome (243342).

It can be divided in two parts, 24336 and 4, that multiplied together give a square (97344 = 312²).

The spelling of 243364 in words is "two hundred forty-three thousand, three hundred sixty-four".