28358441 has 2 divisors, whose sum is σ = 28358442. Its totient is φ = 28358440.

The previous prime is 28358423. The next prime is 28358443. The reversal of 28358441 is 14485382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23425600 + 4932841 = 4840^2 + 2221^2 .

It is a cyclic number.

It is not a de Polignac number, because 28358441 - 2⁶ = 28358377 is a prime.

Together with 28358443, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28358443) 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, 14179220 + 14179221.

It is an arithmetic number, because the mean of its divisors is an integer number (14179221).

Almost surely, 2^28358441 is an apocalyptic number.

It is an amenable number.

28358441 is a deficient number, since it is larger than the sum of its proper divisors (1).

28358441 is an equidigital number, since it uses as much as digits as its factorization.

28358441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30720, while the sum is 35.

The square root of 28358441 is about 5325.2644065811. The cubic root of 28358441 is about 304.9491664812.

The spelling of 28358441 in words is "twenty-eight million, three hundred fifty-eight thousand, four hundred forty-one".