205134004 has 12 divisors (see below), whose sum is σ = 359109828. Its totient is φ = 102531200.

The previous prime is 205134001. The next prime is 205134011. The reversal of 205134004 is 400431502.

It can be written as a sum of positive squares in 2 ways, for example, as 79245604 + 125888400 = 8902^2 + 11220^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205134001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7164 + ... + 21484.

It is an arithmetic number, because the mean of its divisors is an integer number (29925819).

Almost surely, 2^205134004 is an apocalyptic number.

It is an amenable number.

205134004 is a deficient number, since it is larger than the sum of its proper divisors (153975824).

205134004 is a wasteful number, since it uses less digits than its factorization.

205134004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17906 (or 17904 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 205134004 is about 14322.4999214523. The cubic root of 205134004 is about 589.7653035689.

Adding to 205134004 its reverse (400431502), we get a palindrome (605565506).

The spelling of 205134004 in words is "two hundred five million, one hundred thirty-four thousand, four".