71040856 has 8 divisors (see below), whose sum is σ = 133201620. Its totient is φ = 35520424.

The previous prime is 71040847. The next prime is 71040857. The reversal of 71040856 is 65804017.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71040857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4440046 + ... + 4440061.

Almost surely, 2^71040856 is an apocalyptic number.

It is an amenable number.

71040856 is a deficient number, since it is larger than the sum of its proper divisors (62160764).

71040856 is a wasteful number, since it uses less digits than its factorization.

71040856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8880113 (or 8880109 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 71040856 is about 8428.5737820820. The cubic root of 71040856 is about 414.1611856512.

The spelling of 71040856 in words is "seventy-one million, forty thousand, eight hundred fifty-six".