26828112820 has 12 divisors (see below), whose sum is σ = 56339036964. Its totient is φ = 10731245120.

The previous prime is 26828112797. The next prime is 26828112821. The reversal of 26828112820 is 2821182862.

It can be written as a sum of positive squares in 2 ways, for example, as 13730683684 + 13097429136 = 117178^2 + 114444^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26828112821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 670702801 + ... + 670702840.

It is an arithmetic number, because the mean of its divisors is an integer number (4694919747).

Almost surely, 2^26828112820 is an apocalyptic number.

26828112820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26828112820 is an abundant number, since it is smaller than the sum of its proper divisors (29510924144).

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

26828112820 is a wasteful number, since it uses less digits than its factorization.

26828112820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341405650 (or 1341405648 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 40.

The spelling of 26828112820 in words is "twenty-six billion, eight hundred twenty-eight million, one hundred twelve thousand, eight hundred twenty".