204000406 has 16 divisors (see below), whose sum is σ = 314286480. Its totient is φ = 99272800.

The previous prime is 204000383. The next prime is 204000427. The reversal of 204000406 is 604000402.

It is a self number, because there is not a number n which added to its sum of digits gives 204000406.

It is a congruent number.

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, 3360 + ... + 20476.

It is an arithmetic number, because the mean of its divisors is an integer number (19642905).

Almost surely, 2^204000406 is an apocalyptic number.

204000406 is a deficient number, since it is larger than the sum of its proper divisors (110286074).

204000406 is a wasteful number, since it uses less digits than its factorization.

204000406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17279.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 204000406 is about 14282.8710699215. The cubic root of 204000406 is about 588.6769222153.

Adding to 204000406 its reverse (604000402), we get a palindrome (808000808).

The spelling of 204000406 in words is "two hundred four million, four hundred six", and thus it is an aban number.