71712286 has 16 divisors (see below), whose sum is σ = 110586384. Its totient is φ = 34862464.

The previous prime is 71712259. The next prime is 71712293. The reversal of 71712286 is 68221717.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 8985 + ... + 14971.

It is an arithmetic number, because the mean of its divisors is an integer number (6911649).

Almost surely, 2^71712286 is an apocalyptic number.

71712286 is a deficient number, since it is larger than the sum of its proper divisors (38874098).

71712286 is a wasteful number, since it uses less digits than its factorization.

71712286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6155.

The product of its digits is 9408, while the sum is 34.

The square root of 71712286 is about 8468.3106934028. The cubic root of 71712286 is about 415.4618866677.

The spelling of 71712286 in words is "seventy-one million, seven hundred twelve thousand, two hundred eighty-six".