28233062905 has 4 divisors (see below), whose sum is σ = 33879675492. Its totient is φ = 22586450320.

The previous prime is 28233062899. The next prime is 28233062909. The reversal of 28233062905 is 50926033282.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3672844816 + 24560218089 = 60604^2 + 156717^2 .

It is not a de Polignac number, because 28233062905 - 2⁷ = 28233062777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28233062909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2823306286 + ... + 2823306295.

It is an arithmetic number, because the mean of its divisors is an integer number (8469918873).

Almost surely, 2^28233062905 is an apocalyptic number.

It is an amenable number.

28233062905 is a deficient number, since it is larger than the sum of its proper divisors (5646612587).

28233062905 is an equidigital number, since it uses as much as digits as its factorization.

28233062905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5646612586.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 28233062905 in words is "twenty-eight billion, two hundred thirty-three million, sixty-two thousand, nine hundred five".