28316428867 has 4 divisors (see below), whose sum is σ = 28321294216. Its totient is φ = 28311563520.

The previous prime is 28316428853. The next prime is 28316428873. The reversal of 28316428867 is 76882461382.

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 28316428867 - 2¹⁵ = 28316396099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28316425867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2423934 + ... + 2435587.

It is an arithmetic number, because the mean of its divisors is an integer number (7080323554).

Almost surely, 2^28316428867 is an apocalyptic number.

28316428867 is a deficient number, since it is larger than the sum of its proper divisors (4865349).

28316428867 is an equidigital number, since it uses as much as digits as its factorization.

28316428867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4865348.

The product of its digits is 6193152, while the sum is 55.

The spelling of 28316428867 in words is "twenty-eight billion, three hundred sixteen million, four hundred twenty-eight thousand, eight hundred sixty-seven".