6523538728 has 16 divisors (see below), whose sum is σ = 13979011680. Its totient is φ = 2795802288.

The previous prime is 6523538713. The next prime is 6523538731. The reversal of 6523538728 is 8278353256.

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, 58245826 + ... + 58245937.

It is an arithmetic number, because the mean of its divisors is an integer number (873688230).

Almost surely, 2^6523538728 is an apocalyptic number.

It is an amenable number.

6523538728 is an abundant number, since it is smaller than the sum of its proper divisors (7455472952).

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

6523538728 is a wasteful number, since it uses less digits than its factorization.

6523538728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116491776 (or 116491772 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 49.

The square root of 6523538728 is about 80768.4265539450. The cubic root of 6523538728 is about 1868.5056482139.

The spelling of 6523538728 in words is "six billion, five hundred twenty-three million, five hundred thirty-eight thousand, seven hundred twenty-eight".