28414219 has 2 divisors, whose sum is σ = 28414220. Its totient is φ = 28414218.

The previous prime is 28414213. The next prime is 28414237. The reversal of 28414219 is 91241482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28414219 - 2¹⁷ = 28283147 is a prime.

It is a super-2 number, since 2×28414219² = 1614735682759922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28414213) 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, 14207109 + 14207110.

It is an arithmetic number, because the mean of its divisors is an integer number (14207110).

Almost surely, 2^28414219 is an apocalyptic number.

28414219 is a deficient number, since it is larger than the sum of its proper divisors (1).

28414219 is an equidigital number, since it uses as much as digits as its factorization.

28414219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 31.

The square root of 28414219 is about 5330.4989447518. The cubic root of 28414219 is about 305.1489695998.

The spelling of 28414219 in words is "twenty-eight million, four hundred fourteen thousand, two hundred nineteen".