28812860279 has 16 divisors (see below), whose sum is σ = 33004707840. Its totient is φ = 24640014240.

The previous prime is 28812860257. The next prime is 28812860359. The reversal of 28812860279 is 97206821882.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28812860279 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28812860279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28812860579) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8251724 + ... + 8255214.

It is an arithmetic number, because the mean of its divisors is an integer number (2062794240).

Almost surely, 2^28812860279 is an apocalyptic number.

28812860279 is a deficient number, since it is larger than the sum of its proper divisors (4191847561).

28812860279 is a wasteful number, since it uses less digits than its factorization.

28812860279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5870.

The product of its (nonzero) digits is 1548288, while the sum is 53.

The spelling of 28812860279 in words is "twenty-eight billion, eight hundred twelve million, eight hundred sixty thousand, two hundred seventy-nine".