50161728 has 56 divisors (see below), whose sum is σ = 133758432. Its totient is φ = 16589824.

The previous prime is 50161723. The next prime is 50161739. The reversal of 50161728 is 82716105.

It is a junction number, because it is equal to n+sod(n) for n = 50161695 and 50161704.

It is not an unprimeable number, because it can be changed into a prime (50161723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25351 + ... + 27257.

Almost surely, 2^50161728 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 50161728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66879216).

50161728 is an abundant number, since it is smaller than the sum of its proper divisors (83596704).

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

50161728 is a wasteful number, since it uses less digits than its factorization.

50161728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2059 (or 2049 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 50161728 is about 7082.4944758185. The cubic root of 50161728 is about 368.7999297324.

The spelling of 50161728 in words is "fifty million, one hundred sixty-one thousand, seven hundred twenty-eight".