204012228 has 96 divisors (see below), whose sum is σ = 572721408. Its totient is φ = 55296000.

The previous prime is 204012199. The next prime is 204012229. The reversal of 204012228 is 822210402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (204012229) 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 31 ways as a sum of consecutive naturals, for example, 126628 + ... + 128228.

It is an arithmetic number, because the mean of its divisors is an integer number (5965848).

Almost surely, 2^204012228 is an apocalyptic number.

204012228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204012228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286360704).

204012228 is an abundant number, since it is smaller than the sum of its proper divisors (368709180).

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

204012228 is a wasteful number, since it uses less digits than its factorization.

204012228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1693 (or 1691 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 204012228 is about 14283.2849162929. The cubic root of 204012228 is about 588.6882934413.

The spelling of 204012228 in words is "two hundred four million, twelve thousand, two hundred twenty-eight".