243403204 has 24 divisors (see below), whose sum is σ = 484884288. Its totient is φ = 105827040.

The previous prime is 243403169. The next prime is 243403207. The reversal of 243403204 is 402304342.

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

It is not an unprimeable number, because it can be changed into a prime (243403207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119247 + ... + 121270.

It is an arithmetic number, because the mean of its divisors is an integer number (20203512).

Almost surely, 2^243403204 is an apocalyptic number.

It is an amenable number.

243403204 is a deficient number, since it is larger than the sum of its proper divisors (241481084).

243403204 is a wasteful number, since it uses less digits than its factorization.

243403204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240555 (or 240553 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 243403204 is about 15601.3846821364. The cubic root of 243403204 is about 624.3700994538.

Adding to 243403204 its reverse (402304342), we get a palindrome (645707546).

The spelling of 243403204 in words is "two hundred forty-three million, four hundred three thousand, two hundred four".