71171968 has 32 divisors (see below), whose sum is σ = 162045360. Its totient is φ = 30501888.

The previous prime is 71171927. The next prime is 71171981. The reversal of 71171968 is 86917117.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 71171968.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38821 + ... + 40612.

Almost surely, 2^71171968 is an apocalyptic number.

It is an amenable number.

71171968 is an abundant number, since it is smaller than the sum of its proper divisors (90873392).

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

71171968 is an equidigital number, since it uses as much as digits as its factorization.

71171968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79454 (or 79442 counting only the distinct ones).

The product of its digits is 21168, while the sum is 40.

The square root of 71171968 is about 8436.3480250639. The cubic root of 71171968 is about 414.4158190768.

The spelling of 71171968 in words is "seventy-one million, one hundred seventy-one thousand, nine hundred sixty-eight".