204324020 has 48 divisors (see below), whose sum is σ = 460131840. Its totient is φ = 75938304.

The previous prime is 204324017. The next prime is 204324031. The reversal of 204324020 is 20423402.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 204324020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23057 + ... + 30663.

It is an arithmetic number, because the mean of its divisors is an integer number (9586080).

Almost surely, 2^204324020 is an apocalyptic number.

204324020 is a gapful number since it is divisible by the number (20) 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 204324020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230065920).

204324020 is an abundant number, since it is smaller than the sum of its proper divisors (255807820).

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

204324020 is a wasteful number, since it uses less digits than its factorization.

204324020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7712 (or 7710 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 204324020 is about 14294.1953253760. The cubic root of 204324020 is about 588.9880383403.

Adding to 204324020 its reverse (20423402), we get a palindrome (224747422).

The spelling of 204324020 in words is "two hundred four million, three hundred twenty-four thousand, twenty".