204228084820 has 48 divisors (see below), whose sum is σ = 433257027840. Its totient is φ = 80858105856.

The previous prime is 204228084803. The next prime is 204228084877. The reversal of 204228084820 is 28480822402.

It is a super-2 number, since 2×204228084820² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4329321 + ... + 4376239.

It is an arithmetic number, because the mean of its divisors is an integer number (9026188080).

Almost surely, 2^204228084820 is an apocalyptic number.

204228084820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204228084820 is an abundant number, since it is smaller than the sum of its proper divisors (229028943020).

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

204228084820 is a wasteful number, since it uses less digits than its factorization.

204228084820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49144 (or 49142 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 40.

The spelling of 204228084820 in words is "two hundred four billion, two hundred twenty-eight million, eighty-four thousand, eight hundred twenty".