204115772 has 36 divisors (see below), whose sum is σ = 418136040. Its totient is φ = 86927904.

The previous prime is 204115771. The next prime is 204115789. The reversal of 204115772 is 277511402.

204115772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204115771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28754 + ... + 35142.

It is an arithmetic number, because the mean of its divisors is an integer number (11614890).

Almost surely, 2^204115772 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204115772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209068020).

204115772 is an abundant number, since it is smaller than the sum of its proper divisors (214020268).

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

204115772 is a wasteful number, since it uses less digits than its factorization.

204115772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6570 (or 6561 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 204115772 is about 14286.9091128907. The cubic root of 204115772 is about 588.7878705301.

The spelling of 204115772 in words is "two hundred four million, one hundred fifteen thousand, seven hundred seventy-two".