204420628 has 12 divisors (see below), whose sum is σ = 360310720. Its totient is φ = 101474712.

The previous prime is 204420589. The next prime is 204420649. The reversal of 204420628 is 826024402.

It is a super-3 number, since 3×204420628³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204420596 and 204420605.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 183276 + ... + 184387.

Almost surely, 2^204420628 is an apocalyptic number.

It is an amenable number.

204420628 is a deficient number, since it is larger than the sum of its proper divisors (155890092).

204420628 is a wasteful number, since it uses less digits than its factorization.

204420628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367806 (or 367804 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 204420628 is about 14297.5741998424. The cubic root of 204420628 is about 589.0808516911.

The spelling of 204420628 in words is "two hundred four million, four hundred twenty thousand, six hundred twenty-eight".