71382871 has 8 divisors (see below), whose sum is σ = 82918304. Its totient is φ = 60181920.

The previous prime is 71382859. The next prime is 71382893. The reversal of 71382871 is 17828317.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71382871 - 2¹¹ = 71380823 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71382871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71302871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83160 + ... + 84013.

It is an arithmetic number, because the mean of its divisors is an integer number (10364788).

Almost surely, 2^71382871 is an apocalyptic number.

71382871 is a deficient number, since it is larger than the sum of its proper divisors (11535433).

71382871 is a wasteful number, since it uses less digits than its factorization.

71382871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167241.

The product of its digits is 18816, while the sum is 37.

The square root of 71382871 is about 8448.8384408746. The cubic root of 71382871 is about 414.8247598055.

The spelling of 71382871 in words is "seventy-one million, three hundred eighty-two thousand, eight hundred seventy-one".