28112645798 has 16 divisors (see below), whose sum is σ = 42923200320. Its totient is φ = 13805351400.

The previous prime is 28112645797. The next prime is 28112645809. The reversal of 28112645798 is 89754621182.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28112645797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19553 + ... + 237923.

It is an arithmetic number, because the mean of its divisors is an integer number (2682700020).

Almost surely, 2^28112645798 is an apocalyptic number.

28112645798 is a deficient number, since it is larger than the sum of its proper divisors (14810554522).

28112645798 is a wasteful number, since it uses less digits than its factorization.

28112645798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219523.

The product of its digits is 1935360, while the sum is 53.

The spelling of 28112645798 in words is "twenty-eight billion, one hundred twelve million, six hundred forty-five thousand, seven hundred ninety-eight".