204005154 has 16 divisors (see below), whose sum is σ = 408156192. Its totient is φ = 67977408.

The previous prime is 204005129. The next prime is 204005159. The reversal of 204005154 is 451500402.

It is a self number, because there is not a number n which added to its sum of digits gives 204005154.

It is not an unprimeable number, because it can be changed into a prime (204005159) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 22282 + ... + 30074.

It is an arithmetic number, because the mean of its divisors is an integer number (25509762).

Almost surely, 2^204005154 is an apocalyptic number.

204005154 is an abundant number, since it is smaller than the sum of its proper divisors (204151038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204005154 is a wasteful number, since it uses less digits than its factorization.

204005154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12161.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 204005154 is about 14283.0372820349. The cubic root of 204005154 is about 588.6814892264.

Adding to 204005154 its reverse (451500402), we get a palindrome (655505556).

The spelling of 204005154 in words is "two hundred four million, five thousand, one hundred fifty-four".