71047408 has 20 divisors (see below), whose sum is σ = 137801448. Its totient is φ = 35485760.

The previous prime is 71047331. The next prime is 71047411. The reversal of 71047408 is 80474017.

It is a self number, because there is not a number n which added to its sum of digits gives 71047408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18798 + ... + 22258.

Almost surely, 2^71047408 is an apocalyptic number.

It is an amenable number.

71047408 is a deficient number, since it is larger than the sum of its proper divisors (66754040).

71047408 is a wasteful number, since it uses less digits than its factorization.

71047408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4752 (or 4746 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 71047408 is about 8428.9624509782. The cubic root of 71047408 is about 414.1739177645.

The spelling of 71047408 in words is "seventy-one million, forty-seven thousand, four hundred eight".