204505916 has 12 divisors (see below), whose sum is σ = 363752760. Its totient is φ = 100576560.

The previous prime is 204505879. The next prime is 204505921. The reversal of 204505916 is 619505402.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 418826 + ... + 419313.

It is an arithmetic number, because the mean of its divisors is an integer number (30312730).

Almost surely, 2^204505916 is an apocalyptic number.

It is an amenable number.

204505916 is a deficient number, since it is larger than the sum of its proper divisors (159246844).

204505916 is a wasteful number, since it uses less digits than its factorization.

204505916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838204 (or 838202 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 204505916 is about 14300.5564926684. The cubic root of 204505916 is about 589.1627653782.

The spelling of 204505916 in words is "two hundred four million, five hundred five thousand, nine hundred sixteen".