28669628089 has 8 divisors (see below), whose sum is σ = 29289369600. Its totient is φ = 28050292896.

The previous prime is 28669628051. The next prime is 28669628123. The reversal of 28669628089 is 98082696682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28669628089 - 2¹⁵ = 28669595321 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 28669628089.

It is not an unprimeable number, because it can be changed into a prime (28669638089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43272 + ... + 243334.

It is an arithmetic number, because the mean of its divisors is an integer number (3661171200).

Almost surely, 2^28669628089 is an apocalyptic number.

It is an amenable number.

28669628089 is a deficient number, since it is larger than the sum of its proper divisors (619741511).

28669628089 is a wasteful number, since it uses less digits than its factorization.

28669628089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203159.

The product of its (nonzero) digits is 35831808, while the sum is 64.

The spelling of 28669628089 in words is "twenty-eight billion, six hundred sixty-nine million, six hundred twenty-eight thousand, eighty-nine".