28605061 has 2 divisors, whose sum is σ = 28605062. Its totient is φ = 28605060.

The previous prime is 28605053. The next prime is 28605079. The reversal of 28605061 is 16050682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27352900 + 1252161 = 5230^2 + 1119^2 .

It is a cyclic number.

It is not a de Polignac number, because 28605061 - 2³ = 28605053 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 (28605091) 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, 14302530 + 14302531.

It is an arithmetic number, because the mean of its divisors is an integer number (14302531).

Almost surely, 2^28605061 is an apocalyptic number.

It is an amenable number.

28605061 is a deficient number, since it is larger than the sum of its proper divisors (1).

28605061 is an equidigital number, since it uses as much as digits as its factorization.

28605061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 28605061 is about 5348.3699385888. The cubic root of 28605061 is about 305.8306159546.

It can be divided in two parts, 2860 and 5061, that added together give a square (7921 = 89²).

The spelling of 28605061 in words is "twenty-eight million, six hundred five thousand, sixty-one".