28923567879 has 16 divisors (see below), whose sum is σ = 38822961152. Its totient is φ = 19153356768.

The previous prime is 28923567851. The next prime is 28923567929. The reversal of 28923567879 is 97876532982.

It is not a de Polignac number, because 28923567879 - 2²⁴ = 28906790663 is a prime.

It is a super-3 number, since 3×28923567879³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28923567979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1792602 + ... + 1808664.

It is an arithmetic number, because the mean of its divisors is an integer number (2426435072).

Almost surely, 2^28923567879 is an apocalyptic number.

28923567879 is a deficient number, since it is larger than the sum of its proper divisors (9899393273).

28923567879 is a wasteful number, since it uses less digits than its factorization.

28923567879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20046.

The product of its digits is 91445760, while the sum is 66.

The spelling of 28923567879 in words is "twenty-eight billion, nine hundred twenty-three million, five hundred sixty-seven thousand, eight hundred seventy-nine".