204220004 has 12 divisors (see below), whose sum is σ = 363442800. Its totient is φ = 100379208.

The previous prime is 204219991. The next prime is 204220007. The reversal of 204220004 is 400022402.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (204220007) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 432434 + ... + 432905.

It is an arithmetic number, because the mean of its divisors is an integer number (30286900).

Almost surely, 2^204220004 is an apocalyptic number.

It is an amenable number.

204220004 is a deficient number, since it is larger than the sum of its proper divisors (159222796).

204220004 is a wasteful number, since it uses less digits than its factorization.

204220004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865402 (or 865400 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 204220004 is about 14290.5564622236. The cubic root of 204220004 is about 588.8880752543. Note that the first 3 decimals are identical.

Adding to 204220004 its reverse (400022402), we get a palindrome (604242406).

The spelling of 204220004 in words is "two hundred four million, two hundred twenty thousand, four".