76397128 has 16 divisors (see below), whose sum is σ = 145207980. Its totient is φ = 37675008.

The previous prime is 76397093. The next prime is 76397129. The reversal of 76397128 is 82179367.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 69522244 + 6874884 = 8338^2 + 2622^2 .

It is not an unprimeable number, because it can be changed into a prime (76397129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64825 + ... + 65992.

Almost surely, 2^76397128 is an apocalyptic number.

It is an amenable number.

76397128 is a deficient number, since it is larger than the sum of its proper divisors (68810852).

76397128 is a wasteful number, since it uses less digits than its factorization.

76397128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130896 (or 130892 counting only the distinct ones).

The product of its digits is 127008, while the sum is 43.

The square root of 76397128 is about 8740.5450630953. The cubic root of 76397128 is about 424.3188683591.

The spelling of 76397128 in words is "seventy-six million, three hundred ninety-seven thousand, one hundred twenty-eight".