71191968 has 48 divisors (see below), whose sum is σ = 187590816. Its totient is φ = 23640320.

The previous prime is 71191919. The next prime is 71191973. The reversal of 71191968 is 86919117.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26863 + ... + 29393.

It is an arithmetic number, because the mean of its divisors is an integer number (3908142).

Almost surely, 2^71191968 is an apocalyptic number.

It is an amenable number.

71191968 is an abundant number, since it is smaller than the sum of its proper divisors (116398848).

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

71191968 is a wasteful number, since it uses less digits than its factorization.

71191968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2837 (or 2829 counting only the distinct ones).

The product of its digits is 27216, while the sum is 42.

The square root of 71191968 is about 8437.5332888232. The cubic root of 71191968 is about 414.4546337036.

The spelling of 71191968 in words is "seventy-one million, one hundred ninety-one thousand, nine hundred sixty-eight".