71320856 has 16 divisors (see below), whose sum is σ = 133816200. Its totient is φ = 35636544.

The previous prime is 71320783. The next prime is 71320859. The reversal of 71320856 is 65802317.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71320859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22115 + ... + 25133.

Almost surely, 2^71320856 is an apocalyptic number.

It is an amenable number.

71320856 is a deficient number, since it is larger than the sum of its proper divisors (62495344).

71320856 is a wasteful number, since it uses less digits than its factorization.

71320856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5978 (or 5974 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 71320856 is about 8445.1676123094. The cubic root of 71320856 is about 414.7045964737.

The spelling of 71320856 in words is "seventy-one million, three hundred twenty thousand, eight hundred fifty-six".