71858812 has 6 divisors (see below), whose sum is σ = 125752928. Its totient is φ = 35929404.

The previous prime is 71858807. The next prime is 71858819. The reversal of 71858812 is 21885817.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71858819) 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 as a sum of consecutive naturals, namely, 8982348 + ... + 8982355.

Almost surely, 2^71858812 is an apocalyptic number.

It is an amenable number.

71858812 is a deficient number, since it is larger than the sum of its proper divisors (53894116).

71858812 is a wasteful number, since it uses less digits than its factorization.

71858812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17964707 (or 17964705 counting only the distinct ones).

The product of its digits is 35840, while the sum is 40.

The square root of 71858812 is about 8476.9577089897. The cubic root of 71858812 is about 415.7446580831.

The spelling of 71858812 in words is "seventy-one million, eight hundred fifty-eight thousand, eight hundred twelve".