28833571229 has 4 divisors (see below), whose sum is σ = 28851493020. Its totient is φ = 28815649440.

The previous prime is 28833571189. The next prime is 28833571237. The reversal of 28833571229 is 92217533882.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92217533882 = 2 ⋅46108766941.

It can be written as a sum of positive squares in 2 ways, for example, as 25952565604 + 2881005625 = 161098^2 + 53675^2 .

It is a cyclic number.

It is not a de Polignac number, because 28833571229 - 2²⁸ = 28565135773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28833576229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8958482 + ... + 8961699.

It is an arithmetic number, because the mean of its divisors is an integer number (7212873255).

Almost surely, 2^28833571229 is an apocalyptic number.

It is an amenable number.

28833571229 is a deficient number, since it is larger than the sum of its proper divisors (17921791).

28833571229 is a wasteful number, since it uses less digits than its factorization.

28833571229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17921790.

The product of its digits is 1451520, while the sum is 50.

The spelling of 28833571229 in words is "twenty-eight billion, eight hundred thirty-three million, five hundred seventy-one thousand, two hundred twenty-nine".