50131728 has 120 divisors (see below), whose sum is σ = 150302880. Its totient is φ = 15552000.

The previous prime is 50131727. The next prime is 50131729. The reversal of 50131728 is 82713105.

It is an interprime number because it is at equal distance from previous prime (50131727) and next prime (50131729).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50131721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 199603 + ... + 199853.

It is an arithmetic number, because the mean of its divisors is an integer number (1252524).

Almost surely, 2^50131728 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 50131728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75151440).

50131728 is an abundant number, since it is smaller than the sum of its proper divisors (100171152).

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

50131728 is a wasteful number, since it uses less digits than its factorization.

50131728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357 (or 348 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 50131728 is about 7080.3762611884. The cubic root of 50131728 is about 368.7263928965.

The spelling of 50131728 in words is "fifty million, one hundred thirty-one thousand, seven hundred twenty-eight".