204343920 has 120 divisors (see below), whose sum is σ = 748670832. Its totient is φ = 49536000.

The previous prime is 204343913. The next prime is 204343949. The reversal of 204343920 is 29343402.

It is a happy number.

204343920 is a `hidden beast` number, since 204 + 3 + 439 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 4981 + ... + 20820.

Almost surely, 2^204343920 is an apocalyptic number.

204343920 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 204343920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (374335416).

204343920 is an abundant number, since it is smaller than the sum of its proper divisors (544326912).

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

204343920 is a wasteful number, since it uses less digits than its factorization.

204343920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25831 (or 25822 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 204343920 is about 14294.8913951803. The cubic root of 204343920 is about 589.0071590837.

The spelling of 204343920 in words is "two hundred four million, three hundred forty-three thousand, nine hundred twenty".