204600128 has 14 divisors (see below), whose sum is σ = 406003506. Its totient is φ = 102300032.

The previous prime is 204600119. The next prime is 204600139. The reversal of 204600128 is 821006402.

It can be written as a sum of positive squares in only one way, i.e., 188018944 + 16581184 = 13712^2 + 4072^2 .

It is a super-4 number, since 4×204600128⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1598375 + ... + 1598502.

Almost surely, 2^204600128 is an apocalyptic number.

It is an amenable number.

204600128 is a deficient number, since it is larger than the sum of its proper divisors (201403378).

204600128 is an equidigital number, since it uses as much as digits as its factorization.

204600128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3196889 (or 3196879 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 204600128 is about 14303.8501110715. The cubic root of 204600128 is about 589.2532235292.

The spelling of 204600128 in words is "two hundred four million, six hundred thousand, one hundred twenty-eight".