28275696823 has 4 divisors (see below), whose sum is σ = 30846214728. Its totient is φ = 25705178920.

The previous prime is 28275696791. The next prime is 28275696853. The reversal of 28275696823 is 32869657282.

It is a happy number.

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 28275696823 - 2⁵ = 28275696791 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 (28275696853) 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, 1285258936 + ... + 1285258957.

It is an arithmetic number, because the mean of its divisors is an integer number (7711553682).

Almost surely, 2^28275696823 is an apocalyptic number.

28275696823 is a deficient number, since it is larger than the sum of its proper divisors (2570517905).

28275696823 is a wasteful number, since it uses less digits than its factorization.

28275696823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2570517904.

The product of its digits is 17418240, while the sum is 58.

The spelling of 28275696823 in words is "twenty-eight billion, two hundred seventy-five million, six hundred ninety-six thousand, eight hundred twenty-three".