71317260 has 240 divisors, whose sum is σ = 269955840. Its totient is φ = 15396480.

The previous prime is 71317249. The next prime is 71317289. The reversal of 71317260 is 6271317.

71317260 = 819² + 820² + ... + 913².

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 215295 + ... + 215625.

It is an arithmetic number, because the mean of its divisors is an integer number (1124816).

Almost surely, 2^71317260 is an apocalyptic number.

71317260 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71317260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134977920).

71317260 is an abundant number, since it is smaller than the sum of its proper divisors (198638580).

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

71317260 is a wasteful number, since it uses less digits than its factorization.

71317260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 71317260 is about 8444.9547068057. The cubic root of 71317260 is about 414.6976265499.

Adding to 71317260 its reverse (6271317), we get a palindrome (77588577).

The spelling of 71317260 in words is "seventy-one million, three hundred seventeen thousand, two hundred sixty".