75978128 has 10 divisors (see below), whose sum is σ = 147207654. Its totient is φ = 37989056.

The previous prime is 75978127. The next prime is 75978137. The reversal of 75978128 is 82187957.

It can be written as a sum of positive squares in only one way, i.e., 45859984 + 30118144 = 6772^2 + 5488^2 .

It is a super-3 number, since 3×75978128³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (75978121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2374301 + ... + 2374332.

Almost surely, 2^75978128 is an apocalyptic number.

It is an amenable number.

75978128 is a deficient number, since it is larger than the sum of its proper divisors (71229526).

75978128 is a wasteful number, since it uses less digits than its factorization.

75978128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4748641 (or 4748635 counting only the distinct ones).

The product of its digits is 282240, while the sum is 47.

The square root of 75978128 is about 8716.5433515815. The cubic root of 75978128 is about 423.5417203455.

It can be divided in two parts, 759 and 78128, that added together give a palindrome (78887).

The spelling of 75978128 in words is "seventy-five million, nine hundred seventy-eight thousand, one hundred twenty-eight".