28928423 has 2 divisors, whose sum is σ = 28928424. Its totient is φ = 28928422.

The previous prime is 28928371. The next prime is 28928443. The reversal of 28928423 is 32482982.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28928423 - 2²² = 24734119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28928443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14464211 + 14464212.

It is an arithmetic number, because the mean of its divisors is an integer number (14464212).

Almost surely, 2^28928423 is an apocalyptic number.

28928423 is a deficient number, since it is larger than the sum of its proper divisors (1).

28928423 is an equidigital number, since it uses as much as digits as its factorization.

28928423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 38.

The square root of 28928423 is about 5378.5149437368. The cubic root of 28928423 is about 306.9787074043.

The spelling of 28928423 in words is "twenty-eight million, nine hundred twenty-eight thousand, four hundred twenty-three".