71315228 has 12 divisors (see below), whose sum is σ = 125353032. Its totient is φ = 35500080.

The previous prime is 71315219. The next prime is 71315281. The reversal of 71315228 is 82251317.

It is a self number, because there is not a number n which added to its sum of digits gives 71315228.

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, 38363 + ... + 40178.

It is an arithmetic number, because the mean of its divisors is an integer number (10446086).

Almost surely, 2^71315228 is an apocalyptic number.

It is an amenable number.

71315228 is a deficient number, since it is larger than the sum of its proper divisors (54037804).

71315228 is a wasteful number, since it uses less digits than its factorization.

71315228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78772 (or 78770 counting only the distinct ones).

The product of its digits is 3360, while the sum is 29.

The square root of 71315228 is about 8444.8343974290. The cubic root of 71315228 is about 414.6936879354.

The spelling of 71315228 in words is "seventy-one million, three hundred fifteen thousand, two hundred twenty-eight".