28687073289 has 16 divisors (see below), whose sum is σ = 43874949120. Its totient is φ = 16332120720.

The previous prime is 28687073263. The next prime is 28687073341. The reversal of 28687073289 is 98237078682.

It is not a de Polignac number, because 28687073289 - 2²³ = 28678684681 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28687073089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2514699 + ... + 2526080.

It is an arithmetic number, because the mean of its divisors is an integer number (2742184320).

Almost surely, 2^28687073289 is an apocalyptic number.

It is an amenable number.

28687073289 is a deficient number, since it is larger than the sum of its proper divisors (15187875831).

28687073289 is a wasteful number, since it uses less digits than its factorization.

28687073289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5041060.

The product of its (nonzero) digits is 16257024, while the sum is 60.

The spelling of 28687073289 in words is "twenty-eight billion, six hundred eighty-seven million, seventy-three thousand, two hundred eighty-nine".