204380520 has 64 divisors (see below), whose sum is σ = 632931840. Its totient is φ = 52742400.

The previous prime is 204380503. The next prime is 204380521. The reversal of 204380520 is 25083402.

204380520 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (204380521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23751 + ... + 31190.

It is an arithmetic number, because the mean of its divisors is an integer number (9889560).

Almost surely, 2^204380520 is an apocalyptic number.

204380520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204380520 is an abundant number, since it is smaller than the sum of its proper divisors (428551320).

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

204380520 is a wasteful number, since it uses less digits than its factorization.

204380520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54986 (or 54982 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 204380520 is about 14296.1715154792. The cubic root of 204380520 is about 589.0423226372.

The spelling of 204380520 in words is "two hundred four million, three hundred eighty thousand, five hundred twenty".