28534423 has 2 divisors, whose sum is σ = 28534424. Its totient is φ = 28534422.

The previous prime is 28534417. The next prime is 28534501. The reversal of 28534423 is 32443582.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28534423 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28532423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14267211 + 14267212.

It is an arithmetic number, because the mean of its divisors is an integer number (14267212).

Almost surely, 2^28534423 is an apocalyptic number.

28534423 is a deficient number, since it is larger than the sum of its proper divisors (1).

28534423 is an equidigital number, since it uses as much as digits as its factorization.

28534423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 31.

The square root of 28534423 is about 5341.7621624329. The cubic root of 28534423 is about 305.5786667159.

The spelling of 28534423 in words is "twenty-eight million, five hundred thirty-four thousand, four hundred twenty-three".