204781916 has 24 divisors (see below), whose sum is σ = 363654480. Its totient is φ = 100887552.

The previous prime is 204781909. The next prime is 204781919. The reversal of 204781916 is 619187402.

204781916 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 204781916.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204781919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191030 + ... + 192098.

It is an arithmetic number, because the mean of its divisors is an integer number (15152270).

Almost surely, 2^204781916 is an apocalyptic number.

It is an amenable number.

204781916 is a deficient number, since it is larger than the sum of its proper divisors (158872564).

204781916 is a wasteful number, since it uses less digits than its factorization.

204781916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733 (or 1731 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 204781916 is about 14310.2032130924. The cubic root of 204781916 is about 589.4276897859.

The spelling of 204781916 in words is "two hundred four million, seven hundred eighty-one thousand, nine hundred sixteen".