28093390793 has 16 divisors (see below), whose sum is σ = 31013176320. Its totient is φ = 25286108736.

The previous prime is 28093390771. The next prime is 28093390807. The reversal of 28093390793 is 39709339082.

It is a cyclic number.

It is not a de Polignac number, because 28093390793 - 2¹⁰ = 28093389769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28093390093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78896 + ... + 249822.

It is an arithmetic number, because the mean of its divisors is an integer number (1938323520).

Almost surely, 2^28093390793 is an apocalyptic number.

It is an amenable number.

28093390793 is a deficient number, since it is larger than the sum of its proper divisors (2919785527).

28093390793 is a wasteful number, since it uses less digits than its factorization.

28093390793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171256.

The product of its (nonzero) digits is 2204496, while the sum is 53.

It can be divided in two parts, 2809339079 and 3, that added together give a palindrome (2809339082).

The spelling of 28093390793 in words is "twenty-eight billion, ninety-three million, three hundred ninety thousand, seven hundred ninety-three".