28256141 has 2 divisors, whose sum is σ = 28256142. Its totient is φ = 28256140.

The previous prime is 28256131. The next prime is 28256161. The reversal of 28256141 is 14165282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20666116 + 7590025 = 4546^2 + 2755^2 .

It is a cyclic number.

It is not a de Polignac number, because 28256141 - 2¹⁸ = 27993997 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28256101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14128070 + 14128071.

It is an arithmetic number, because the mean of its divisors is an integer number (14128071).

Almost surely, 2^28256141 is an apocalyptic number.

It is an amenable number.

28256141 is a deficient number, since it is larger than the sum of its proper divisors (1).

28256141 is an equidigital number, since it uses as much as digits as its factorization.

It is an anagram of its base 9 representation: 28256141 = (58146122)₉.

28256141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 29.

The square root of 28256141 is about 5315.6505716610. The cubic root of 28256141 is about 304.5820343162.

The spelling of 28256141 in words is "twenty-eight million, two hundred fifty-six thousand, one hundred forty-one".