28866872323 has 4 divisors (see below), whose sum is σ = 28969601688. Its totient is φ = 28764142960.

The previous prime is 28866872303. The next prime is 28866872327. The reversal of 28866872323 is 32327866882.

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 28866872323 - 2⁵ = 28866872291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28866872327) 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, 51364261 + ... + 51364822.

It is an arithmetic number, because the mean of its divisors is an integer number (7242400422).

Almost surely, 2^28866872323 is an apocalyptic number.

28866872323 is a deficient number, since it is larger than the sum of its proper divisors (102729365).

28866872323 is a wasteful number, since it uses less digits than its factorization.

28866872323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102729364.

The product of its digits is 9289728, while the sum is 55.

The spelling of 28866872323 in words is "twenty-eight billion, eight hundred sixty-six million, eight hundred seventy-two thousand, three hundred twenty-three".