28287334247 has 2 divisors, whose sum is σ = 28287334248. Its totient is φ = 28287334246.

The previous prime is 28287334241. The next prime is 28287334249. The reversal of 28287334247 is 74243378282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28287334247 - 2³⁰ = 27213592423 is a prime.

Together with 28287334249, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 28287334195 and 28287334204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28287334241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14143667123 + 14143667124.

It is an arithmetic number, because the mean of its divisors is an integer number (14143667124).

Almost surely, 2^28287334247 is an apocalyptic number.

28287334247 is a deficient number, since it is larger than the sum of its proper divisors (1).

28287334247 is an equidigital number, since it uses as much as digits as its factorization.

28287334247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3612672, while the sum is 50.

The spelling of 28287334247 in words is "twenty-eight billion, two hundred eighty-seven million, three hundred thirty-four thousand, two hundred forty-seven".