50777728 has 32 divisors (see below), whose sum is σ = 106488000. Its totient is φ = 24051456.

The previous prime is 50777723. The next prime is 50777729. The reversal of 50777728 is 82777705.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (50777723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8008 + ... + 12871.

It is an arithmetic number, because the mean of its divisors is an integer number (3327750).

Almost surely, 2^50777728 is an apocalyptic number.

It is an amenable number.

50777728 is an abundant number, since it is smaller than the sum of its proper divisors (55710272).

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

50777728 is a wasteful number, since it uses less digits than its factorization.

50777728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20912 (or 20900 counting only the distinct ones).

The product of its (nonzero) digits is 192080, while the sum is 43.

The square root of 50777728 is about 7125.8492827171. The cubic root of 50777728 is about 370.3034471951.

The spelling of 50777728 in words is "fifty million, seven hundred seventy-seven thousand, seven hundred twenty-eight".