50000128 has 36 divisors (see below), whose sum is σ = 105685020. Its totient is φ = 23527424.

The previous prime is 50000101. The next prime is 50000131. The reversal of 50000128 is 82100005.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 25080064 + 24920064 = 5008^2 + 4992^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1393 + ... + 10096.

It is an arithmetic number, because the mean of its divisors is an integer number (2935695).

Almost surely, 2^50000128 is an apocalyptic number.

It is an amenable number.

50000128 is an abundant number, since it is smaller than the sum of its proper divisors (55684892).

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

50000128 is a wasteful number, since it uses less digits than its factorization.

50000128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11522 (or 11508 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 50000128 is about 7071.0768628265. The cubic root of 50000128 is about 368.4034642345.

The spelling of 50000128 in words is "fifty million, one hundred twenty-eight", and thus it is an aban number.