28427573 has 2 divisors, whose sum is σ = 28427574. Its totient is φ = 28427572.

The previous prime is 28427543. The next prime is 28427593. The reversal of 28427573 is 37572482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17623204 + 10804369 = 4198^2 + 3287^2 .

It is a cyclic number.

It is not a de Polignac number, because 28427573 - 2¹⁴ = 28411189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28427513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14213786 + 14213787.

It is an arithmetic number, because the mean of its divisors is an integer number (14213787).

Almost surely, 2^28427573 is an apocalyptic number.

It is an amenable number.

28427573 is a deficient number, since it is larger than the sum of its proper divisors (1).

28427573 is an equidigital number, since it uses as much as digits as its factorization.

28427573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94080, while the sum is 38.

The square root of 28427573 is about 5331.7514008063. The cubic root of 28427573 is about 305.1967663400.

The spelling of 28427573 in words is "twenty-eight million, four hundred twenty-seven thousand, five hundred seventy-three".