28265423 has 2 divisors, whose sum is σ = 28265424. Its totient is φ = 28265422.

The previous prime is 28265389. The next prime is 28265431. The reversal of 28265423 is 32456282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28265423 - 2¹⁶ = 28199887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28265423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28265453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14132711 + 14132712.

It is an arithmetic number, because the mean of its divisors is an integer number (14132712).

Almost surely, 2^28265423 is an apocalyptic number.

28265423 is a deficient number, since it is larger than the sum of its proper divisors (1).

28265423 is an equidigital number, since it uses as much as digits as its factorization.

28265423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 32.

The square root of 28265423 is about 5316.5235821917. The cubic root of 28265423 is about 304.6153818864.

The spelling of 28265423 in words is "twenty-eight million, two hundred sixty-five thousand, four hundred twenty-three".