28823836609 has 4 divisors (see below), whose sum is σ = 29031202480. Its totient is φ = 28616470740.

The previous prime is 28823836567. The next prime is 28823836663. The reversal of 28823836609 is 90663832882.

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 28823836609 - 2¹⁹ = 28823312321 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 28823836609.

It is not an unprimeable number, because it can be changed into a prime (28823836309) 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, 103682727 + ... + 103683004.

It is an arithmetic number, because the mean of its divisors is an integer number (7257800620).

Almost surely, 2^28823836609 is an apocalyptic number.

It is an amenable number.

28823836609 is a deficient number, since it is larger than the sum of its proper divisors (207365871).

28823836609 is a wasteful number, since it uses less digits than its factorization.

28823836609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207365870.

The product of its (nonzero) digits is 5971968, while the sum is 55.

The spelling of 28823836609 in words is "twenty-eight billion, eight hundred twenty-three million, eight hundred thirty-six thousand, six hundred nine".