28348219 has 2 divisors, whose sum is σ = 28348220. Its totient is φ = 28348218.

The previous prime is 28348211. The next prime is 28348237. The reversal of 28348219 is 91284382.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28348219 - 2³ = 28348211 is a prime.

It is a super-2 number, since 2×28348219² = 1607243040943922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28348211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14174109 + 14174110.

It is an arithmetic number, because the mean of its divisors is an integer number (14174110).

Almost surely, 2^28348219 is an apocalyptic number.

28348219 is a deficient number, since it is larger than the sum of its proper divisors (1).

28348219 is an equidigital number, since it uses as much as digits as its factorization.

28348219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 37.

The square root of 28348219 is about 5324.3045555265. The cubic root of 28348219 is about 304.9125217188.

The spelling of 28348219 in words is "twenty-eight million, three hundred forty-eight thousand, two hundred nineteen".