28857234467 has 6 divisors (see below), whose sum is σ = 29578237884. Its totient is φ = 28153397840.

The previous prime is 28857234451. The next prime is 28857234491. The reversal of 28857234467 is 76443275882.

It is not a de Polignac number, because 28857234467 - 2⁴ = 28857234451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28857236467) 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, 8581673 + ... + 8585034.

It is an arithmetic number, because the mean of its divisors is an integer number (4929706314).

Almost surely, 2^28857234467 is an apocalyptic number.

28857234467 is a deficient number, since it is larger than the sum of its proper divisors (721003417).

28857234467 is an equidigital number, since it uses as much as digits as its factorization.

28857234467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17166789 (or 17166748 counting only the distinct ones).

The product of its digits is 18063360, while the sum is 56.

The spelling of 28857234467 in words is "twenty-eight billion, eight hundred fifty-seven million, two hundred thirty-four thousand, four hundred sixty-seven".