28847123 has 2 divisors, whose sum is σ = 28847124. Its totient is φ = 28847122.

The previous prime is 28847101. The next prime is 28847153. The reversal of 28847123 is 32174882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28847123 - 2⁶ = 28847059 is a prime.

It is not a weakly prime, because it can be changed into another prime (28847153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14423561 + 14423562.

It is an arithmetic number, because the mean of its divisors is an integer number (14423562).

Almost surely, 2^28847123 is an apocalyptic number.

28847123 is a deficient number, since it is larger than the sum of its proper divisors (1).

28847123 is an equidigital number, since it uses as much as digits as its factorization.

28847123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21504, while the sum is 35.

The square root of 28847123 is about 5370.9517778509. The cubic root of 28847123 is about 306.6908614864.

The spelling of 28847123 in words is "twenty-eight million, eight hundred forty-seven thousand, one hundred twenty-three".