204428562 has 32 divisors (see below), whose sum is σ = 463485120. Its totient is φ = 59590080.

The previous prime is 204428557. The next prime is 204428563. The reversal of 204428562 is 265824402.

It is a super-2 number, since 2×204428562² = 83582073922775688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204428563) 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 15 ways as a sum of consecutive naturals, for example, 67489 + ... + 70452.

It is an arithmetic number, because the mean of its divisors is an integer number (14483910).

Almost surely, 2^204428562 is an apocalyptic number.

204428562 is an abundant number, since it is smaller than the sum of its proper divisors (259056558).

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

204428562 is a wasteful number, since it uses less digits than its factorization.

204428562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137978.

The product of its (nonzero) digits is 30720, while the sum is 33.

The square root of 204428562 is about 14297.8516568049. The cubic root of 204428562 is about 589.0884727534.

The spelling of 204428562 in words is "two hundred four million, four hundred twenty-eight thousand, five hundred sixty-two".