71044036 has 12 divisors (see below), whose sum is σ = 142088128. Its totient is φ = 30447432.

The previous prime is 71044031. The next prime is 71044049. The reversal of 71044036 is 63044017.

71044036 = 1709² + 1710² + ... + 1732².

71044036 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 71044036.

It is not an unprimeable number, because it can be changed into a prime (71044031) by changing a digit.

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, 1268616 + ... + 1268671.

Almost surely, 2^71044036 is an apocalyptic number.

It is an amenable number.

71044036 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71044036 is a wasteful number, since it uses less digits than its factorization.

71044036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2537298 (or 2537296 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 71044036 is about 8428.7624239861. The cubic root of 71044036 is about 414.1673652545.

The spelling of 71044036 in words is "seventy-one million, forty-four thousand, thirty-six".