28944671189 has 16 divisors (see below), whose sum is σ = 35029980288. Its totient is φ = 23347325952.

The previous prime is 28944671183. The next prime is 28944671209. The reversal of 28944671189 is 98117644982.

It is a cyclic number.

It is not a de Polignac number, because 28944671189 - 2¹² = 28944667093 is a prime.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28944671183) 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, 1770557 + ... + 1786829.

It is an arithmetic number, because the mean of its divisors is an integer number (2189373768).

Almost surely, 2^28944671189 is an apocalyptic number.

It is an amenable number.

28944671189 is a deficient number, since it is larger than the sum of its proper divisors (6085309099).

28944671189 is a wasteful number, since it uses less digits than its factorization.

28944671189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31244.

The product of its digits is 6967296, while the sum is 59.

The spelling of 28944671189 in words is "twenty-eight billion, nine hundred forty-four million, six hundred seventy-one thousand, one hundred eighty-nine".