28858112889 has 32 divisors (see below), whose sum is σ = 41040328320. Its totient is φ = 18002460672.

The previous prime is 28858112849. The next prime is 28858112911. The reversal of 28858112889 is 98821185882.

It is not a de Polignac number, because 28858112889 - 2²¹ = 28856015737 is a prime.

It is a super-4 number, since 4×28858112889⁴ (a number of 43 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (28858112809) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 809842 + ... + 844724.

It is an arithmetic number, because the mean of its divisors is an integer number (1282510260).

Almost surely, 2^28858112889 is an apocalyptic number.

28858112889 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

28858112889 is a deficient number, since it is larger than the sum of its proper divisors (12182215431).

28858112889 is a wasteful number, since it uses less digits than its factorization.

28858112889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35209.

The product of its digits is 5898240, while the sum is 60.

The spelling of 28858112889 in words is "twenty-eight billion, eight hundred fifty-eight million, one hundred twelve thousand, eight hundred eighty-nine".