28611529 has 2 divisors, whose sum is σ = 28611530. Its totient is φ = 28611528.

The previous prime is 28611521. The next prime is 28611551. The reversal of 28611529 is 92511682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19820304 + 8791225 = 4452^2 + 2965^2 .

It is a cyclic number.

It is not a de Polignac number, because 28611529 - 2³ = 28611521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28611494 and 28611503.

It is not a weakly prime, because it can be changed into another prime (28611521) 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, 14305764 + 14305765.

It is an arithmetic number, because the mean of its divisors is an integer number (14305765).

Almost surely, 2^28611529 is an apocalyptic number.

It is an amenable number.

28611529 is a deficient number, since it is larger than the sum of its proper divisors (1).

28611529 is an equidigital number, since it uses as much as digits as its factorization.

28611529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 34.

The square root of 28611529 is about 5348.9745746264. The cubic root of 28611529 is about 305.8536650617.

The spelling of 28611529 in words is "twenty-eight million, six hundred eleven thousand, five hundred twenty-nine".