28605959 has 2 divisors, whose sum is σ = 28605960. Its totient is φ = 28605958.

The previous prime is 28605949. The next prime is 28605961. The reversal of 28605959 is 95950682.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28605959 - 2⁴ = 28605943 is a prime.

Together with 28605961, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28605949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14302979 + 14302980.

It is an arithmetic number, because the mean of its divisors is an integer number (14302980).

Almost surely, 2^28605959 is an apocalyptic number.

28605959 is a deficient number, since it is larger than the sum of its proper divisors (1).

28605959 is an equidigital number, since it uses as much as digits as its factorization.

28605959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 28605959 is about 5348.4538887421. The cubic root of 28605959 is about 305.8338162393.

The spelling of 28605959 in words is "twenty-eight million, six hundred five thousand, nine hundred fifty-nine".