28328350523 has 8 divisors (see below), whose sum is σ = 32530163520. Its totient is φ = 24397622280.

The previous prime is 28328350513. The next prime is 28328350573. The reversal of 28328350523 is 32505382382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28328350523 is a prime.

It is a super-3 number, since 3×28328350523³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28328350513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67770965 + ... + 67771382.

It is an arithmetic number, because the mean of its divisors is an integer number (4066270440).

Almost surely, 2^28328350523 is an apocalyptic number.

28328350523 is a deficient number, since it is larger than the sum of its proper divisors (4201812997).

28328350523 is a wasteful number, since it uses less digits than its factorization.

28328350523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135542377.

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 28328350523 in words is "twenty-eight billion, three hundred twenty-eight million, three hundred fifty thousand, five hundred twenty-three".