71275216 has 20 divisors (see below), whose sum is σ = 138356100. Its totient is φ = 35570432.

The previous prime is 71275201. The next prime is 71275219. The reversal of 71275216 is 61257217.

It can be written as a sum of positive squares in 2 ways, for example, as 10497600 + 60777616 = 3240^2 + 7796^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71275219) 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 3 ways as a sum of consecutive naturals, for example, 5190 + ... + 13018.

It is an arithmetic number, because the mean of its divisors is an integer number (6917805).

Almost surely, 2^71275216 is an apocalyptic number.

It is an amenable number.

71275216 is a deficient number, since it is larger than the sum of its proper divisors (67080884).

71275216 is a wasteful number, since it uses less digits than its factorization.

71275216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8406 (or 8400 counting only the distinct ones).

The product of its digits is 5880, while the sum is 31.

The square root of 71275216 is about 8442.4650428651. The cubic root of 71275216 is about 414.6161176491.

The spelling of 71275216 in words is "seventy-one million, two hundred seventy-five thousand, two hundred sixteen".