50405728 has 48 divisors (see below), whose sum is σ = 102918816. Its totient is φ = 24284160.

The previous prime is 50405711. The next prime is 50405737. The reversal of 50405728 is 82750405.

It is a self number, because there is not a number n which added to its sum of digits gives 50405728.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134950 + ... + 135322.

It is an arithmetic number, because the mean of its divisors is an integer number (2144142).

Almost surely, 2^50405728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50405728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51459408).

50405728 is an abundant number, since it is smaller than the sum of its proper divisors (52513088).

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

50405728 is a wasteful number, since it uses less digits than its factorization.

50405728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527 (or 519 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 50405728 is about 7099.6991485555. The cubic root of 50405728 is about 369.3969431146.

The spelling of 50405728 in words is "fifty million, four hundred five thousand, seven hundred twenty-eight".