28287261419 has 2 divisors, whose sum is σ = 28287261420. Its totient is φ = 28287261418.

The previous prime is 28287261391. The next prime is 28287261421. The reversal of 28287261419 is 91416278282.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28287261419 is a prime.

It is a super-2 number, since 2×28287261419² (a number of 22 digits) contains 22 as substring.

Together with 28287261421, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28287261449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14143630709 + 14143630710.

It is an arithmetic number, because the mean of its divisors is an integer number (14143630710).

Almost surely, 2^28287261419 is an apocalyptic number.

28287261419 is a deficient number, since it is larger than the sum of its proper divisors (1).

28287261419 is an equidigital number, since it uses as much as digits as its factorization.

28287261419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 774144, while the sum is 50.

The spelling of 28287261419 in words is "twenty-eight billion, two hundred eighty-seven million, two hundred sixty-one thousand, four hundred nineteen".