71047112 has 8 divisors (see below), whose sum is σ = 133213350. Its totient is φ = 35523552.

The previous prime is 71047043. The next prime is 71047117. The reversal of 71047112 is 21174017.

It can be written as a sum of positive squares in only one way, i.e., 64866916 + 6180196 = 8054^2 + 2486^2 .

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

It is not an unprimeable number, because it can be changed into a prime (71047117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4440437 + ... + 4440452.

Almost surely, 2^71047112 is an apocalyptic number.

It is an amenable number.

71047112 is a deficient number, since it is larger than the sum of its proper divisors (62166238).

71047112 is a wasteful number, since it uses less digits than its factorization.

71047112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8880895 (or 8880891 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 71047112 is about 8428.9448924524. The cubic root of 71047112 is about 414.1733425821.

The spelling of 71047112 in words is "seventy-one million, forty-seven thousand, one hundred twelve".