50505728 has 96 divisors (see below), whose sum is σ = 124750080. Its totient is φ = 19906560.

The previous prime is 50505701. The next prime is 50505737. The reversal of 50505728 is 82750505.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 50505694 and 50505703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186233 + ... + 186503.

It is an arithmetic number, because the mean of its divisors is an integer number (1299480).

Almost surely, 2^50505728 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 50505728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62375040).

50505728 is an abundant number, since it is smaller than the sum of its proper divisors (74244352).

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

50505728 is a wasteful number, since it uses less digits than its factorization.

50505728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 32.

The square root of 50505728 is about 7106.7382110220. The cubic root of 50505728 is about 369.6410641330.

The spelling of 50505728 in words is "fifty million, five hundred five thousand, seven hundred twenty-eight".