50128640 has 36 divisors (see below), whose sum is σ = 120076824. Its totient is φ = 20050944.

The previous prime is 50128607. The next prime is 50128651. The reversal of 50128640 is 4682105.

50128640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 18302 + ... + 20861.

Almost surely, 2^50128640 is an apocalyptic number.

It is an amenable number.

50128640 is an abundant number, since it is smaller than the sum of its proper divisors (69948184).

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

50128640 is an equidigital number, since it uses as much as digits as its factorization.

50128640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39184 (or 39170 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 50128640 is about 7080.1581903232. The cubic root of 50128640 is about 368.7188218397.

The spelling of 50128640 in words is "fifty million, one hundred twenty-eight thousand, six hundred forty".