28657141 has 2 divisors, whose sum is σ = 28657142. Its totient is φ = 28657140.

The previous prime is 28657063. The next prime is 28657151. The reversal of 28657141 is 14175682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28196100 + 461041 = 5310^2 + 679^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28657141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28657097 and 28657106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28657151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14328570 + 14328571.

It is an arithmetic number, because the mean of its divisors is an integer number (14328571).

Almost surely, 2^28657141 is an apocalyptic number.

It is an amenable number.

28657141 is a deficient number, since it is larger than the sum of its proper divisors (1).

28657141 is an equidigital number, since it uses as much as digits as its factorization.

28657141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 34.

The square root of 28657141 is about 5353.2364976713. The cubic root of 28657141 is about 306.0161076289.

The spelling of 28657141 in words is "twenty-eight million, six hundred fifty-seven thousand, one hundred forty-one".