204420004 has 6 divisors (see below), whose sum is σ = 357735014. Its totient is φ = 102210000.

The previous prime is 204420001. The next prime is 204420011. The reversal of 204420004 is 400024402.

204420004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 189612900 + 14807104 = 13770^2 + 3848^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 204420004.

It is not an unprimeable number, because it can be changed into a prime (204420001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25552497 + ... + 25552504.

Almost surely, 2^204420004 is an apocalyptic number.

It is an amenable number.

204420004 is a deficient number, since it is larger than the sum of its proper divisors (153315010).

204420004 is a wasteful number, since it uses less digits than its factorization.

204420004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51105005 (or 51105003 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 204420004 is about 14297.5523779422. The cubic root of 204420004 is about 589.0802522949.

Adding to 204420004 its reverse (400024402), we get a palindrome (604444406).

The spelling of 204420004 in words is "two hundred four million, four hundred twenty thousand, four".