28892216393 has 4 divisors (see below), whose sum is σ = 28892707200. Its totient is φ = 28891725588.

The previous prime is 28892216357. The next prime is 28892216413. The reversal of 28892216393 is 39361229882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28892216393 - 2⁸ = 28892216137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28892216293) 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, 142805 + ... + 279602.

It is an arithmetic number, because the mean of its divisors is an integer number (7223176800).

Almost surely, 2^28892216393 is an apocalyptic number.

It is an amenable number.

28892216393 is a deficient number, since it is larger than the sum of its proper divisors (490807).

28892216393 is an equidigital number, since it uses as much as digits as its factorization.

28892216393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490806.

The product of its digits is 2239488, while the sum is 53.

The spelling of 28892216393 in words is "twenty-eight billion, eight hundred ninety-two million, two hundred sixteen thousand, three hundred ninety-three".