71310480 has 80 divisors (see below), whose sum is σ = 226485504. Its totient is φ = 18549760.

The previous prime is 71310467. The next prime is 71310487. The reversal of 71310480 is 8401317.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 71310480.

It is not an unprimeable number, because it can be changed into a prime (71310487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6217 + ... + 13463.

Almost surely, 2^71310480 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 71310480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113242752).

71310480 is an abundant number, since it is smaller than the sum of its proper divisors (155175024).

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

71310480 is a wasteful number, since it uses less digits than its factorization.

71310480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7304 (or 7298 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 71310480 is about 8444.5532741525. The cubic root of 71310480 is about 414.6844846213.

Adding to 71310480 its reverse (8401317), we get a palindrome (79711797).

The spelling of 71310480 in words is "seventy-one million, three hundred ten thousand, four hundred eighty".