28794516109 has 4 divisors (see below), whose sum is σ = 30046451616. Its totient is φ = 27542580604.

The previous prime is 28794516097. The next prime is 28794516187. The reversal of 28794516109 is 90161549782.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28794516109 - 2⁹ = 28794515597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28794516199) 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, 625967719 + ... + 625967764.

It is an arithmetic number, because the mean of its divisors is an integer number (7511612904).

Almost surely, 2^28794516109 is an apocalyptic number.

It is an amenable number.

28794516109 is a deficient number, since it is larger than the sum of its proper divisors (1251935507).

28794516109 is a wasteful number, since it uses less digits than its factorization.

28794516109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251935506.

The product of its (nonzero) digits is 1088640, while the sum is 52.

The spelling of 28794516109 in words is "twenty-eight billion, seven hundred ninety-four million, five hundred sixteen thousand, one hundred nine".