204284220 has 48 divisors (see below), whose sum is σ = 653710848. Its totient is φ = 46693440.

The previous prime is 204284191. The next prime is 204284221. The reversal of 204284220 is 22482402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204284221) 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, 242776 + ... + 243615.

It is an arithmetic number, because the mean of its divisors is an integer number (13618976).

Almost surely, 2^204284220 is an apocalyptic number.

204284220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204284220 is an abundant number, since it is smaller than the sum of its proper divisors (449426628).

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

204284220 is a wasteful number, since it uses less digits than its factorization.

204284220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486410 (or 486408 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 204284220 is about 14292.8030840700. The cubic root of 204284220 is about 588.9497931287.

The spelling of 204284220 in words is "two hundred four million, two hundred eighty-four thousand, two hundred twenty".