71047732 has 12 divisors (see below), whose sum is σ = 142095520. Its totient is φ = 30449016.

The previous prime is 71047727. The next prime is 71047771. The reversal of 71047732 is 23774017.

71047732 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 71047694 and 71047703.

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, 1268682 + ... + 1268737.

Almost surely, 2^71047732 is an apocalyptic number.

It is an amenable number.

71047732 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71047732 is a wasteful number, since it uses less digits than its factorization.

71047732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2537430 (or 2537428 counting only the distinct ones).

The product of its (nonzero) digits is 8232, while the sum is 31.

The square root of 71047732 is about 8428.9816704036. The cubic root of 71047732 is about 414.1745473542.

The spelling of 71047732 in words is "seventy-one million, forty-seven thousand, seven hundred thirty-two".