71040008 has 64 divisors (see below), whose sum is σ = 158578560. Its totient is φ = 29500416.

The previous prime is 71040007. The next prime is 71040029. The reversal of 71040008 is 80004017.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (71040001) 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 15 ways as a sum of consecutive naturals, for example, 39791 + ... + 41537.

It is an arithmetic number, because the mean of its divisors is an integer number (2477790).

Almost surely, 2^71040008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71040008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79289280).

71040008 is an abundant number, since it is smaller than the sum of its proper divisors (87538552).

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

71040008 is a wasteful number, since it uses less digits than its factorization.

71040008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806 (or 1802 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 71040008 is about 8428.5234768612. The cubic root of 71040008 is about 414.1595377259.

The spelling of 71040008 in words is "seventy-one million, forty thousand, eight".