71785328 has 20 divisors (see below), whose sum is σ = 142844280. Its totient is φ = 34922304.

The previous prime is 71785327. The next prime is 71785333. The reversal of 71785328 is 82358717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71785321) 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 3 ways as a sum of consecutive naturals, for example, 60038 + ... + 61221.

It is an arithmetic number, because the mean of its divisors is an integer number (7142214).

Almost surely, 2^71785328 is an apocalyptic number.

It is an amenable number.

71785328 is a deficient number, since it is larger than the sum of its proper divisors (71058952).

71785328 is a wasteful number, since it uses less digits than its factorization.

71785328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121304 (or 121298 counting only the distinct ones).

The product of its digits is 94080, while the sum is 41.

The square root of 71785328 is about 8472.6222623223. The cubic root of 71785328 is about 415.6028939794.

The spelling of 71785328 in words is "seventy-one million, seven hundred eighty-five thousand, three hundred twenty-eight".