204320923940 has 24 divisors (see below), whose sum is σ = 490370217792. Its totient is φ = 70052888160.

The previous prime is 204320923931. The next prime is 204320923949. The reversal of 204320923940 is 49329023402.

204320923940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (204320923931) and next prime (204320923949).

It is a junction number, because it is equal to n+sod(n) for n = 204320923894 and 204320923903.

It is not an unprimeable number, because it can be changed into a prime (204320923949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 729717446 + ... + 729717725.

It is an arithmetic number, because the mean of its divisors is an integer number (20432092408).

Almost surely, 2^204320923940 is an apocalyptic number.

204320923940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204320923940 is an abundant number, since it is smaller than the sum of its proper divisors (286049293852).

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

204320923940 is a wasteful number, since it uses less digits than its factorization.

204320923940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1459435187 (or 1459435185 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 38.

The spelling of 204320923940 in words is "two hundred four billion, three hundred twenty million, nine hundred twenty-three thousand, nine hundred forty".