28619 has 2 divisors, whose sum is σ = 28620. Its totient is φ = 28618.

The previous prime is 28607. The next prime is 28621. The reversal of 28619 is 91682.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28619 - 2⁴ = 28603 is a prime.

It is a super-2 number, since 2×28619² = 1638094322, which contains 22 as substring.

Together with 28621, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 12.

It is not a weakly prime, because it can be changed into another prime (28649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14309 + 14310.

It is an arithmetic number, because the mean of its divisors is an integer number (14310).

2²⁸⁶¹⁹ is an apocalyptic number.

28619 is a deficient number, since it is larger than the sum of its proper divisors (1).

28619 is an equidigital number, since it uses as much as digits as its factorization.

28619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 26.

The square root of 28619 is about 169.1715106039. The cubic root of 28619 is about 30.5880284097.

The spelling of 28619 in words is "twenty-eight thousand, six hundred nineteen".