28164361 has 2 divisors, whose sum is σ = 28164362. Its totient is φ = 28164360.

The previous prime is 28164347. The next prime is 28164413. The reversal of 28164361 is 16346182.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20430400 + 7733961 = 4520^2 + 2781^2 .

It is a cyclic number.

It is not a de Polignac number, because 28164361 - 2⁵ = 28164329 is a prime.

It is not a weakly prime, because it can be changed into another prime (28162361) 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, 14082180 + 14082181.

It is an arithmetic number, because the mean of its divisors is an integer number (14082181).

Almost surely, 2^28164361 is an apocalyptic number.

It is an amenable number.

28164361 is a deficient number, since it is larger than the sum of its proper divisors (1).

28164361 is an equidigital number, since it uses as much as digits as its factorization.

28164361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 31.

The square root of 28164361 is about 5307.0105520905. The cubic root of 28164361 is about 304.2519012356.

The spelling of 28164361 in words is "twenty-eight million, one hundred sixty-four thousand, three hundred sixty-one".