71080538 has 16 divisors (see below), whose sum is σ = 108395496. Its totient is φ = 34951680.

The previous prime is 71080531. The next prime is 71080547. The reversal of 71080538 is 83508017.

It can be written as a sum of positive squares in 4 ways, for example, as 59336209 + 11744329 = 7703^2 + 3427^2 .

It is not an unprimeable number, because it can be changed into a prime (71080531) 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, 86168 + ... + 86988.

Almost surely, 2^71080538 is an apocalyptic number.

71080538 is a deficient number, since it is larger than the sum of its proper divisors (37314958).

71080538 is a wasteful number, since it uses less digits than its factorization.

71080538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1489.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 71080538 is about 8430.9274697390. The cubic root of 71080538 is about 414.2382853467.

The spelling of 71080538 in words is "seventy-one million, eighty thousand, five hundred thirty-eight".