28223066439 has 20 divisors (see below), whose sum is σ = 42195633040. Its totient is φ = 18799646400.

The previous prime is 28223066437. The next prime is 28223066453. The reversal of 28223066439 is 93466032282.

It is a happy number.

28223066439 is a `hidden beast` number, since 282 + 2 + 306 + 64 + 3 + 9 = 666.

It is not a de Polignac number, because 28223066439 - 2¹ = 28223066437 is a prime.

It is a super-3 number, since 3×28223066439³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28223066394 and 28223066403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28223066437) 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 19 ways as a sum of consecutive naturals, for example, 47779 + ... + 242340.

It is an arithmetic number, because the mean of its divisors is an integer number (2109781652).

Almost surely, 2^28223066439 is an apocalyptic number.

28223066439 is a deficient number, since it is larger than the sum of its proper divisors (13972566601).

28223066439 is a wasteful number, since it uses less digits than its factorization.

28223066439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291332 (or 291323 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 45.

The spelling of 28223066439 in words is "twenty-eight billion, two hundred twenty-three million, sixty-six thousand, four hundred thirty-nine".