28276819 has 2 divisors, whose sum is σ = 28276820. Its totient is φ = 28276818.

The previous prime is 28276777. The next prime is 28276837. The reversal of 28276819 is 91867282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28276819 - 2⁹ = 28276307 is a prime.

It is a super-2 number, since 2×28276819² = 1599156985517522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28276319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14138409 + 14138410.

It is an arithmetic number, because the mean of its divisors is an integer number (14138410).

Almost surely, 2^28276819 is an apocalyptic number.

28276819 is a deficient number, since it is larger than the sum of its proper divisors (1).

28276819 is an equidigital number, since it uses as much as digits as its factorization.

28276819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 43.

The square root of 28276819 is about 5317.5952271680. The cubic root of 28276819 is about 304.6563144711.

The spelling of 28276819 in words is "twenty-eight million, two hundred seventy-six thousand, eight hundred nineteen".