204106406 has 8 divisors (see below), whose sum is σ = 349896720. Its totient is φ = 87474168.

The previous prime is 204106307. The next prime is 204106411. The reversal of 204106406 is 604601402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7289501 + ... + 7289528.

It is an arithmetic number, because the mean of its divisors is an integer number (43737090).

Almost surely, 2^204106406 is an apocalyptic number.

204106406 is a deficient number, since it is larger than the sum of its proper divisors (145790314).

204106406 is a wasteful number, since it uses less digits than its factorization.

204106406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14579038.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 204106406 is about 14286.5813265455. The cubic root of 204106406 is about 588.7788647397.

Adding to 204106406 its reverse (604601402), we get a palindrome (808707808).

The spelling of 204106406 in words is "two hundred four million, one hundred six thousand, four hundred six".