75638128 has 20 divisors (see below), whose sum is σ = 146770120. Its totient is φ = 37761984.

The previous prime is 75638113. The next prime is 75638137. The reversal of 75638128 is 82183657.

It is a super-2 number, since 2×75638128² = 11442252814688768, which contains 22 as substring.

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, 8626 + ... + 15022.

It is an arithmetic number, because the mean of its divisors is an integer number (7338506).

Almost surely, 2^75638128 is an apocalyptic number.

It is an amenable number.

75638128 is a deficient number, since it is larger than the sum of its proper divisors (71131992).

75638128 is a wasteful number, since it uses less digits than its factorization.

75638128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7144 (or 7138 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 75638128 is about 8697.0183396380. The cubic root of 75638128 is about 422.9089964760.

The spelling of 75638128 in words is "seventy-five million, six hundred thirty-eight thousand, one hundred twenty-eight".