28112423 has 2 divisors, whose sum is σ = 28112424. Its totient is φ = 28112422.

The previous prime is 28112401. The next prime is 28112473. The reversal of 28112423 is 32421182.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28112423 - 2¹⁰ = 28111399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28112473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14056211 + 14056212.

It is an arithmetic number, because the mean of its divisors is an integer number (14056212).

Almost surely, 2^28112423 is an apocalyptic number.

28112423 is a deficient number, since it is larger than the sum of its proper divisors (1).

28112423 is an equidigital number, since it uses as much as digits as its factorization.

28112423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768, while the sum is 23.

The square root of 28112423 is about 5302.1149553739. The cubic root of 28112423 is about 304.0647621432.

The spelling of 28112423 in words is "twenty-eight million, one hundred twelve thousand, four hundred twenty-three".