28089419 has 2 divisors, whose sum is σ = 28089420. Its totient is φ = 28089418.

The previous prime is 28089377. The next prime is 28089443. The reversal of 28089419 is 91498082.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28089419 is a prime.

It is a super-2 number, since 2×28089419² = 1578030919515122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28019419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14044709 + 14044710.

It is an arithmetic number, because the mean of its divisors is an integer number (14044710).

Almost surely, 2^28089419 is an apocalyptic number.

28089419 is a deficient number, since it is larger than the sum of its proper divisors (1).

28089419 is an equidigital number, since it uses as much as digits as its factorization.

28089419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 28089419 is about 5299.9451883958. The cubic root of 28089419 is about 303.9818022059.

The spelling of 28089419 in words is "twenty-eight million, eighty-nine thousand, four hundred nineteen".