71545472 has 32 divisors (see below), whose sum is σ = 143428320. Its totient is φ = 35547904.

The previous prime is 71545447. The next prime is 71545511. The reversal of 71545472 is 27454517.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19703 + ... + 23049.

It is an arithmetic number, because the mean of its divisors is an integer number (4482135).

Almost surely, 2^71545472 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 71545472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71714160).

71545472 is an abundant number, since it is smaller than the sum of its proper divisors (71882848).

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

71545472 is a wasteful number, since it uses less digits than its factorization.

71545472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3528 (or 3516 counting only the distinct ones).

The product of its digits is 39200, while the sum is 35.

The square root of 71545472 is about 8458.4556510039. The cubic root of 71545472 is about 415.1394934370.

Adding to 71545472 its reverse (27454517), we get a palindrome (98999989).

The spelling of 71545472 in words is "seventy-one million, five hundred forty-five thousand, four hundred seventy-two".