200665128 has 16 divisors (see below), whose sum is σ = 501662880. Its totient is φ = 66888368.

The previous prime is 200665103. The next prime is 200665147. The reversal of 200665128 is 821566002.

It is a junction number, because it is equal to n+sod(n) for n = 200665095 and 200665104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4180500 + ... + 4180547.

It is an arithmetic number, because the mean of its divisors is an integer number (31353930).

Almost surely, 2^200665128 is an apocalyptic number.

It is an amenable number.

200665128 is an abundant number, since it is smaller than the sum of its proper divisors (300997752).

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

200665128 is a wasteful number, since it uses less digits than its factorization.

200665128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8361056 (or 8361052 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 200665128 is about 14165.6319308388. The cubic root of 200665128 is about 585.4511123399.

The spelling of 200665128 in words is "two hundred million, six hundred sixty-five thousand, one hundred twenty-eight".