28320119 has 2 divisors, whose sum is σ = 28320120. Its totient is φ = 28320118.

The previous prime is 28320091. The next prime is 28320191. The reversal of 28320119 is 91102382.

Together with next prime (28320191) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28320119 is a prime.

It is a super-2 number, since 2×28320119² = 1604058280348322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28320319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14160059 + 14160060.

It is an arithmetic number, because the mean of its divisors is an integer number (14160060).

Almost surely, 2^28320119 is an apocalyptic number.

28320119 is a deficient number, since it is larger than the sum of its proper divisors (1).

28320119 is an equidigital number, since it uses as much as digits as its factorization.

28320119 is an evil number, because the sum of its binary digits is even.

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

The square root of 28320119 is about 5321.6650589829. The cubic root of 28320119 is about 304.8117408499.

It can be divided in two parts, 283 and 20119, that added together give a palindrome (20402).

The spelling of 28320119 in words is "twenty-eight million, three hundred twenty thousand, one hundred nineteen".