28224787443 has 4 divisors (see below), whose sum is σ = 37633049928. Its totient is φ = 18816524960.

The previous prime is 28224787417. The next prime is 28224787447. The reversal of 28224787443 is 34478742282.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28224787443 - 2⁵ = 28224787411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28224787447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4704131238 + ... + 4704131243.

It is an arithmetic number, because the mean of its divisors is an integer number (9408262482).

Almost surely, 2^28224787443 is an apocalyptic number.

28224787443 is a deficient number, since it is larger than the sum of its proper divisors (9408262485).

28224787443 is an equidigital number, since it uses as much as digits as its factorization.

28224787443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9408262484.

The product of its digits is 4816896, while the sum is 51.

The spelling of 28224787443 in words is "twenty-eight billion, two hundred twenty-four million, seven hundred eighty-seven thousand, four hundred forty-three".