50686128 has 40 divisors (see below), whose sum is σ = 145489200. Its totient is φ = 16895232.

The previous prime is 50686117. The next prime is 50686151. The reversal of 50686128 is 82168605.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 50686092 and 50686101.

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, 58233 + ... + 59096.

It is an arithmetic number, because the mean of its divisors is an integer number (3637230).

Almost surely, 2^50686128 is an apocalyptic number.

It is an amenable number.

50686128 is an abundant number, since it is smaller than the sum of its proper divisors (94803072).

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

50686128 is a wasteful number, since it uses less digits than its factorization.

50686128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117346 (or 117334 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 50686128 is about 7119.4190774248. The cubic root of 50686128 is about 370.0806447054.

The spelling of 50686128 in words is "fifty million, six hundred eighty-six thousand, one hundred twenty-eight".