71147712 has 28 divisors (see below), whose sum is σ = 188245496. Its totient is φ = 23715840.

The previous prime is 71147689. The next prime is 71147719. The reversal of 71147712 is 21774117.

It is a self number, because there is not a number n which added to its sum of digits gives 71147712.

It is not an unprimeable number, because it can be changed into a prime (71147719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185089 + ... + 185472.

Almost surely, 2^71147712 is an apocalyptic number.

It is an amenable number.

71147712 is an abundant number, since it is smaller than the sum of its proper divisors (117097784).

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

71147712 is a wasteful number, since it uses less digits than its factorization.

71147712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370576 (or 370566 counting only the distinct ones).

The product of its digits is 2744, while the sum is 30.

The square root of 71147712 is about 8434.9103136904. The cubic root of 71147712 is about 414.3687349389.

The spelling of 71147712 in words is "seventy-one million, one hundred forty-seven thousand, seven hundred twelve".