28657117223 has 6 divisors (see below), whose sum is σ = 33335830296. Its totient is φ = 24563243292.

The previous prime is 28657117211. The next prime is 28657117319. The reversal of 28657117223 is 32271175682.

It is not a de Polignac number, because 28657117223 - 2¹⁰ = 28657116199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28657317223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 292419515 + ... + 292419612.

It is an arithmetic number, because the mean of its divisors is an integer number (5555971716).

Almost surely, 2^28657117223 is an apocalyptic number.

28657117223 is a deficient number, since it is larger than the sum of its proper divisors (4678713073).

28657117223 is an equidigital number, since it uses as much as digits as its factorization.

28657117223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584839141 (or 584839134 counting only the distinct ones).

The product of its digits is 282240, while the sum is 44.

The spelling of 28657117223 in words is "twenty-eight billion, six hundred fifty-seven million, one hundred seventeen thousand, two hundred twenty-three".