71305260 has 96 divisors (see below), whose sum is σ = 217183680. Its totient is φ = 17375232.

The previous prime is 71305243. The next prime is 71305261. The reversal of 71305260 is 6250317.

It is a self number, because there is not a number n which added to its sum of digits gives 71305260.

It is not an unprimeable number, because it can be changed into a prime (71305261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87736 + ... + 88544.

It is an arithmetic number, because the mean of its divisors is an integer number (2262330).

Almost surely, 2^71305260 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 71305260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108591840).

71305260 is an abundant number, since it is smaller than the sum of its proper divisors (145878420).

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

71305260 is a wasteful number, since it uses less digits than its factorization.

71305260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947 (or 945 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 71305260 is about 8444.2441935321. The cubic root of 71305260 is about 414.6743659317.

Adding to 71305260 its reverse (6250317), we get a palindrome (77555577).

The spelling of 71305260 in words is "seventy-one million, three hundred five thousand, two hundred sixty".