71047672 has 8 divisors (see below), whose sum is σ = 133214400. Its totient is φ = 35523832.

The previous prime is 71047663. The next prime is 71047673. The reversal of 71047672 is 27674017.

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 (71047673) 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, 4440472 + ... + 4440487.

It is an arithmetic number, because the mean of its divisors is an integer number (16651800).

Almost surely, 2^71047672 is an apocalyptic number.

It is an amenable number.

71047672 is a deficient number, since it is larger than the sum of its proper divisors (62166728).

71047672 is a wasteful number, since it uses less digits than its factorization.

71047672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8880965 (or 8880961 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 34.

The square root of 71047672 is about 8428.9781112541. The cubic root of 71047672 is about 414.1744307636.

The spelling of 71047672 in words is "seventy-one million, forty-seven thousand, six hundred seventy-two".