28894423 has 2 divisors, whose sum is σ = 28894424. Its totient is φ = 28894422.

The previous prime is 28894399. The next prime is 28894427. The reversal of 28894423 is 32449882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28894423 - 2⁵ = 28894391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28894427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14447211 + 14447212.

It is an arithmetic number, because the mean of its divisors is an integer number (14447212).

Almost surely, 2^28894423 is an apocalyptic number.

28894423 is a deficient number, since it is larger than the sum of its proper divisors (1).

28894423 is an equidigital number, since it uses as much as digits as its factorization.

28894423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 110592, while the sum is 40.

The square root of 28894423 is about 5375.3532907149. The cubic root of 28894423 is about 306.8583947306.

The spelling of 28894423 in words is "twenty-eight million, eight hundred ninety-four thousand, four hundred twenty-three".