200139728 has 10 divisors (see below), whose sum is σ = 387770754. Its totient is φ = 100069856.

The previous prime is 200139707. The next prime is 200139757. The reversal of 200139728 is 827931002.

It can be written as a sum of positive squares in only one way, i.e., 138485824 + 61653904 = 11768^2 + 7852^2 .

It is a junction number, because it is equal to n+sod(n) for n = 200139694 and 200139703.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6254351 + ... + 6254382.

Almost surely, 2^200139728 is an apocalyptic number.

It is an amenable number.

200139728 is a deficient number, since it is larger than the sum of its proper divisors (187631026).

200139728 is a wasteful number, since it uses less digits than its factorization.

200139728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12508741 (or 12508735 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 200139728 is about 14147.0748920051. The cubic root of 200139728 is about 584.9397049893.

The spelling of 200139728 in words is "two hundred million, one hundred thirty-nine thousand, seven hundred twenty-eight".