204845628 has 48 divisors (see below), whose sum is σ = 516682656. Its totient is φ = 62791680.

The previous prime is 204845623. The next prime is 204845629. The reversal of 204845628 is 826548402.

204845628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204845621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41500 + ... + 46172.

It is an arithmetic number, because the mean of its divisors is an integer number (10764222).

Almost surely, 2^204845628 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 204845628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258341328).

204845628 is an abundant number, since it is smaller than the sum of its proper divisors (311837028).

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

204845628 is a wasteful number, since it uses less digits than its factorization.

204845628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4974 (or 4972 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 39.

The square root of 204845628 is about 14312.4291439294. The cubic root of 204845628 is about 589.4888112687.

The spelling of 204845628 in words is "two hundred four million, eight hundred forty-five thousand, six hundred twenty-eight".