7181528872 has 32 divisors (see below), whose sum is σ = 15415012800. Its totient is φ = 3072593664.

The previous prime is 7181528863. The next prime is 7181528873. The reversal of 7181528872 is 2788251817.

It is not an unprimeable number, because it can be changed into a prime (7181528873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74922 + ... + 141337.

It is an arithmetic number, because the mean of its divisors is an integer number (481719150).

Almost surely, 2^7181528872 is an apocalyptic number.

It is an amenable number.

7181528872 is an abundant number, since it is smaller than the sum of its proper divisors (8233483928).

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

7181528872 is a wasteful number, since it uses less digits than its factorization.

7181528872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216865 (or 216861 counting only the distinct ones).

The product of its digits is 501760, while the sum is 49.

The square root of 7181528872 is about 84743.9016802979. The cubic root of 7181528872 is about 1929.3260886413.

It can be divided in two parts, 7181528 and 872, that added together give a square (7182400 = 2680²).

The spelling of 7181528872 in words is "seven billion, one hundred eighty-one million, five hundred twenty-eight thousand, eight hundred seventy-two".