28872611889 has 16 divisors (see below), whose sum is σ = 42110976000. Its totient is φ = 17450865360.

The previous prime is 28872611881. The next prime is 28872611891. The reversal of 28872611889 is 98811627882.

It is not a de Polignac number, because 28872611889 - 2³ = 28872611881 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28872611881) 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, 1179889 + ... + 1204110.

It is an arithmetic number, because the mean of its divisors is an integer number (2631936000).

Almost surely, 2^28872611889 is an apocalyptic number.

It is an amenable number.

28872611889 is a deficient number, since it is larger than the sum of its proper divisors (13238364111).

28872611889 is a wasteful number, since it uses less digits than its factorization.

28872611889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2384380.

The product of its digits is 6193152, while the sum is 60.

The spelling of 28872611889 in words is "twenty-eight billion, eight hundred seventy-two million, six hundred eleven thousand, eight hundred eighty-nine".