28348819 has 2 divisors, whose sum is σ = 28348820. Its totient is φ = 28348818.

The previous prime is 28348807. The next prime is 28348823. The reversal of 28348819 is 91884382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28348819 - 2²³ = 19960211 is a prime.

It is a super-2 number, since 2×28348819² = 1607311077389522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28348219) 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, 14174409 + 14174410.

It is an arithmetic number, because the mean of its divisors is an integer number (14174410).

Almost surely, 2^28348819 is an apocalyptic number.

28348819 is a deficient number, since it is larger than the sum of its proper divisors (1).

28348819 is an equidigital number, since it uses as much as digits as its factorization.

28348819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 110592, while the sum is 43.

The square root of 28348819 is about 5324.3609006152. The cubic root of 28348819 is about 304.9146728971.

The spelling of 28348819 in words is "twenty-eight million, three hundred forty-eight thousand, eight hundred nineteen".