28548617 has 2 divisors, whose sum is σ = 28548618. Its totient is φ = 28548616.

The previous prime is 28548607. The next prime is 28548623. The reversal of 28548617 is 71684582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18913801 + 9634816 = 4349^2 + 3104^2 .

It is a cyclic number.

It is not a de Polignac number, because 28548617 - 2⁴ = 28548601 is a prime.

It is a super-3 number, since 3×28548617³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (28548607) 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, 14274308 + 14274309.

It is an arithmetic number, because the mean of its divisors is an integer number (14274309).

Almost surely, 2^28548617 is an apocalyptic number.

It is an amenable number.

28548617 is a deficient number, since it is larger than the sum of its proper divisors (1).

28548617 is an equidigital number, since it uses as much as digits as its factorization.

28548617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107520, while the sum is 41.

The square root of 28548617 is about 5343.0905850453. The cubic root of 28548617 is about 305.6293267510.

The spelling of 28548617 in words is "twenty-eight million, five hundred forty-eight thousand, six hundred seventeen".