71871284 has 12 divisors (see below), whose sum is σ = 125908608. Its totient is φ = 35897400.

The previous prime is 71871271. The next prime is 71871301. The reversal of 71871284 is 48217817.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5102 + ... + 13029.

It is an arithmetic number, because the mean of its divisors is an integer number (10492384).

Almost surely, 2^71871284 is an apocalyptic number.

It is an amenable number.

71871284 is a deficient number, since it is larger than the sum of its proper divisors (54037324).

71871284 is a wasteful number, since it uses less digits than its factorization.

71871284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19126 (or 19124 counting only the distinct ones).

The product of its digits is 25088, while the sum is 38.

The square root of 71871284 is about 8477.6933183502. The cubic root of 71871284 is about 415.7687092619.

The spelling of 71871284 in words is "seventy-one million, eight hundred seventy-one thousand, two hundred eighty-four".