71723712 has 28 divisors (see below), whose sum is σ = 189769496. Its totient is φ = 23907840.

The previous prime is 71723711. The next prime is 71723737. The reversal of 71723712 is 21732717.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 71723712.

It is not an unprimeable number, because it can be changed into a prime (71723711) 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, 186589 + ... + 186972.

It is an arithmetic number, because the mean of its divisors is an integer number (6777482).

Almost surely, 2^71723712 is an apocalyptic number.

It is an amenable number.

71723712 is an abundant number, since it is smaller than the sum of its proper divisors (118045784).

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

71723712 is a wasteful number, since it uses less digits than its factorization.

71723712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373576 (or 373566 counting only the distinct ones).

The product of its digits is 4116, while the sum is 30.

The square root of 71723712 is about 8468.9852993142. The cubic root of 71723712 is about 415.4839508341.

The spelling of 71723712 in words is "seventy-one million, seven hundred twenty-three thousand, seven hundred twelve".