50728538 has 16 divisors (see below), whose sum is σ = 87348480. Its totient is φ = 21644496.

The previous prime is 50728529. The next prime is 50728543. The reversal of 50728538 is 83582705.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4706 + ... + 11117.

It is an arithmetic number, because the mean of its divisors is an integer number (5459280).

Almost surely, 2^50728538 is an apocalyptic number.

50728538 is a deficient number, since it is larger than the sum of its proper divisors (36619942).

50728538 is a wasteful number, since it uses less digits than its factorization.

50728538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16061.

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 50728538 is about 7122.3969280011. The cubic root of 50728538 is about 370.1838336536.

The spelling of 50728538 in words is "fifty million, seven hundred twenty-eight thousand, five hundred thirty-eight".