28892387689 has 16 divisors (see below), whose sum is σ = 33871144896. Its totient is φ = 24351782400.

The previous prime is 28892387683. The next prime is 28892387701. The reversal of 28892387689 is 98678329882.

It is not a de Polignac number, because 28892387689 - 2²⁷ = 28758169961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28892387683) 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, 1140492 + ... + 1165549.

It is an arithmetic number, because the mean of its divisors is an integer number (2116946556).

Almost surely, 2^28892387689 is an apocalyptic number.

It is an amenable number.

28892387689 is a deficient number, since it is larger than the sum of its proper divisors (4978757207).

28892387689 is a wasteful number, since it uses less digits than its factorization.

28892387689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2306136.

The product of its digits is 167215104, while the sum is 70.

The spelling of 28892387689 in words is "twenty-eight billion, eight hundred ninety-two million, three hundred eighty-seven thousand, six hundred eighty-nine".