28813704023 has 4 divisors (see below), whose sum is σ = 31030142808. Its totient is φ = 26597265240.

The previous prime is 28813703939. The next prime is 28813704067. The reversal of 28813704023 is 32040731882.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32040731882 = 2 ⋅16020365941.

It is not a de Polignac number, because 28813704023 - 2¹² = 28813699927 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 (28813701023) 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, 1108219373 + ... + 1108219398.

It is an arithmetic number, because the mean of its divisors is an integer number (7757535702).

Almost surely, 2^28813704023 is an apocalyptic number.

28813704023 is a deficient number, since it is larger than the sum of its proper divisors (2216438785).

28813704023 is a wasteful number, since it uses less digits than its factorization.

28813704023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2216438784.

The product of its (nonzero) digits is 64512, while the sum is 38.

The spelling of 28813704023 in words is "twenty-eight billion, eight hundred thirteen million, seven hundred four thousand, twenty-three".