71520480 has 72 divisors (see below), whose sum is σ = 244068552. Its totient is φ = 19071744.

The previous prime is 71520473. The next prime is 71520539. The reversal of 71520480 is 8402517.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23394 + ... + 26273.

It is an arithmetic number, because the mean of its divisors is an integer number (3389841).

Almost surely, 2^71520480 is an apocalyptic number.

It is an amenable number.

71520480 is an abundant number, since it is smaller than the sum of its proper divisors (172548072).

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

71520480 is a wasteful number, since it uses less digits than its factorization.

71520480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49688 (or 49677 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 71520480 is about 8456.9781837250. The cubic root of 71520480 is about 415.0911494760.

Adding to 71520480 its reverse (8402517), we get a palindrome (79922997).

The spelling of 71520480 in words is "seventy-one million, five hundred twenty thousand, four hundred eighty".