75115128 has 32 divisors (see below), whose sum is σ = 204860160. Its totient is φ = 22762080.

The previous prime is 75115123. The next prime is 75115141. The reversal of 75115128 is 82151157.

It is a junction number, because it is equal to n+sod(n) for n = 75115095 and 75115104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75115123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142000 + ... + 142527.

It is an arithmetic number, because the mean of its divisors is an integer number (6401880).

Almost surely, 2^75115128 is an apocalyptic number.

It is an amenable number.

75115128 is an abundant number, since it is smaller than the sum of its proper divisors (129745032).

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

75115128 is a wasteful number, since it uses less digits than its factorization.

75115128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284547 (or 284543 counting only the distinct ones).

The product of its digits is 2800, while the sum is 30.

The square root of 75115128 is about 8666.8984071581. The cubic root of 75115128 is about 421.9320061458.

The spelling of 75115128 in words is "seventy-five million, one hundred fifteen thousand, one hundred twenty-eight".