50440728 has 64 divisors (see below), whose sum is σ = 136533600. Its totient is φ = 15436800.

The previous prime is 50440721. The next prime is 50440757. The reversal of 50440728 is 82704405.

It is a junction number, because it is equal to n+sod(n) for n = 50440695 and 50440704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50440721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83628 + ... + 84228.

Almost surely, 2^50440728 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 50440728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68266800).

50440728 is an abundant number, since it is smaller than the sum of its proper divisors (86092872).

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

50440728 is a wasteful number, since it uses less digits than its factorization.

50440728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892 (or 888 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 50440728 is about 7102.1636139982. The cubic root of 50440728 is about 369.4824221677.

The spelling of 50440728 in words is "fifty million, four hundred forty thousand, seven hundred twenty-eight".