50109128 has 8 divisors (see below), whose sum is σ = 93954630. Its totient is φ = 25054560.

The previous prime is 50109119. The next prime is 50109131. The reversal of 50109128 is 82190105.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 49815364 + 293764 = 7058^2 + 542^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 50109097 and 50109106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3131813 + ... + 3131828.

Almost surely, 2^50109128 is an apocalyptic number.

It is an amenable number.

50109128 is a deficient number, since it is larger than the sum of its proper divisors (43845502).

50109128 is a wasteful number, since it uses less digits than its factorization.

50109128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6263647 (or 6263643 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 50109128 is about 7078.7801208965. The cubic root of 50109128 is about 368.6709757693.

The spelling of 50109128 in words is "fifty million, one hundred nine thousand, one hundred twenty-eight".