28233744841 has 3 divisors (see below), whose sum is σ = 28233912871. Its totient is φ = 28233576812.

The previous prime is 28233744821. The next prime is 28233744863. The reversal of 28233744841 is 14844733282.

The square root of 28233744841 is 168029.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 12150432441 + 16083312400 = 110229^2 + 126820^2 .

It is not a de Polignac number, because 28233744841 - 2¹⁹ = 28233220553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28233744791 and 28233744800.

It is not an unprimeable number, because it can be changed into a prime (28233744821) 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 2 ways as a sum of consecutive naturals, for example, 84015 + ... + 252043.

Almost surely, 2^28233744841 is an apocalyptic number.

28233744841 is the 168029-th square number.

28233744841 is the 84015-th centered octagonal number.

It is an amenable number.

28233744841 is a deficient number, since it is larger than the sum of its proper divisors (168030).

28233744841 is an frugal number, since it uses more digits than its factorization.

28233744841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336058 (or 168029 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 46.

The spelling of 28233744841 in words is "twenty-eight billion, two hundred thirty-three million, seven hundred forty-four thousand, eight hundred forty-one".