204423264 has 192 divisors, whose sum is σ = 634798080. Its totient is φ = 64665216.

The previous prime is 204423239. The next prime is 204423277. The reversal of 204423264 is 462324402.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1609569 + ... + 1609695.

It is an arithmetic number, because the mean of its divisors is an integer number (3306240).

Almost surely, 2^204423264 is an apocalyptic number.

204423264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204423264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317399040).

204423264 is an abundant number, since it is smaller than the sum of its proper divisors (430374816).

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

204423264 is an equidigital number, since it uses as much as digits as its factorization.

204423264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 204423264 is about 14297.6663830151. Note that the first 3 decimals coincide. The cubic root of 204423264 is about 589.0833837423.

Adding to 204423264 its reverse (462324402), we get a palindrome (666747666).

The spelling of 204423264 in words is "two hundred four million, four hundred twenty-three thousand, two hundred sixty-four".