28143061 has 2 divisors, whose sum is σ = 28143062. Its totient is φ = 28143060.

The previous prime is 28143013. The next prime is 28143103. The reversal of 28143061 is 16034182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28143025 + 36 = 5305^2 + 6^2 .

It is a cyclic number.

It is not a de Polignac number, because 28143061 - 2⁹ = 28142549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28143001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14071530 + 14071531.

It is an arithmetic number, because the mean of its divisors is an integer number (14071531).

Almost surely, 2^28143061 is an apocalyptic number.

It is an amenable number.

28143061 is a deficient number, since it is larger than the sum of its proper divisors (1).

28143061 is an equidigital number, since it uses as much as digits as its factorization.

28143061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 28143061 is about 5305.0033930244. The cubic root of 28143061 is about 304.1751825309.

The spelling of 28143061 in words is "twenty-eight million, one hundred forty-three thousand, sixty-one".