6828738856 has 16 divisors (see below), whose sum is σ = 12857017140. Its totient is φ = 3400200960.

The previous prime is 6828738827. The next prime is 6828738877. The reversal of 6828738856 is 6588378286.

It can be written as a sum of positive squares in 2 ways, for example, as 5436702756 + 1392036100 = 73734^2 + 37310^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6828738794 and 6828738803.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1769011 + ... + 1772866.

Almost surely, 2^6828738856 is an apocalyptic number.

It is an amenable number.

6828738856 is a deficient number, since it is larger than the sum of its proper divisors (6028278284).

6828738856 is a wasteful number, since it uses less digits than its factorization.

6828738856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3542124 (or 3542120 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 61.

The square root of 6828738856 is about 82636.1836969738. The cubic root of 6828738856 is about 1897.2016845491.

The spelling of 6828738856 in words is "six billion, eight hundred twenty-eight million, seven hundred thirty-eight thousand, eight hundred fifty-six".