28120334023 has 2 divisors, whose sum is σ = 28120334024. Its totient is φ = 28120334022.

The previous prime is 28120334017. The next prime is 28120334041. The reversal of 28120334023 is 32043302182.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28120334023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28120333982 and 28120334000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28120334923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14060167011 + 14060167012.

It is an arithmetic number, because the mean of its divisors is an integer number (14060167012).

Almost surely, 2^28120334023 is an apocalyptic number.

28120334023 is a deficient number, since it is larger than the sum of its proper divisors (1).

28120334023 is an equidigital number, since it uses as much as digits as its factorization.

28120334023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 28.

The spelling of 28120334023 in words is "twenty-eight billion, one hundred twenty million, three hundred thirty-four thousand, twenty-three".