28338564323 has 4 divisors (see below), whose sum is σ = 28338970728. Its totient is φ = 28338157920.

The previous prime is 28338564301. The next prime is 28338564337. The reversal of 28338564323 is 32346583382.

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 28338564323 - 2²⁴ = 28321787107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28338564823) 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, 69113 + ... + 247898.

It is an arithmetic number, because the mean of its divisors is an integer number (7084742682).

Almost surely, 2^28338564323 is an apocalyptic number.

28338564323 is a deficient number, since it is larger than the sum of its proper divisors (406405).

28338564323 is an equidigital number, since it uses as much as digits as its factorization.

28338564323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406404.

The product of its digits is 2488320, while the sum is 47.

The spelling of 28338564323 in words is "twenty-eight billion, three hundred thirty-eight million, five hundred sixty-four thousand, three hundred twenty-three".