28501141 has 2 divisors, whose sum is σ = 28501142. Its totient is φ = 28501140.

The previous prime is 28501127. The next prime is 28501177. The reversal of 28501141 is 14110582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24216241 + 4284900 = 4921^2 + 2070^2 .

It is a cyclic number.

It is not a de Polignac number, because 28501141 - 2⁹ = 28500629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28501181) 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, 14250570 + 14250571.

It is an arithmetic number, because the mean of its divisors is an integer number (14250571).

Almost surely, 2^28501141 is an apocalyptic number.

It is an amenable number.

28501141 is a deficient number, since it is larger than the sum of its proper divisors (1).

28501141 is an equidigital number, since it uses as much as digits as its factorization.

28501141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 28501141 is about 5338.6459893872. The cubic root of 28501141 is about 305.4598134758.

The spelling of 28501141 in words is "twenty-eight million, five hundred one thousand, one hundred forty-one".