204243506 has 16 divisors (see below), whose sum is σ = 309441600. Its totient is φ = 101101200.

The previous prime is 204243463. The next prime is 204243511. The reversal of 204243506 is 605342402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103820 + ... + 105768.

It is an arithmetic number, because the mean of its divisors is an integer number (19340100).

Almost surely, 2^204243506 is an apocalyptic number.

204243506 is a deficient number, since it is larger than the sum of its proper divisors (105198094).

204243506 is a wasteful number, since it uses less digits than its factorization.

204243506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2449.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 204243506 is about 14291.3787298497. The cubic root of 204243506 is about 588.9106644823.

Adding to 204243506 its reverse (605342402), we get a palindrome (809585908).

The spelling of 204243506 in words is "two hundred four million, two hundred forty-three thousand, five hundred six".