28486589 has 2 divisors, whose sum is σ = 28486590. Its totient is φ = 28486588.

The previous prime is 28486583. The next prime is 28486631. The reversal of 28486589 is 98568482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25452025 + 3034564 = 5045^2 + 1742^2 .

It is a cyclic number.

It is not a de Polignac number, because 28486589 - 2⁸ = 28486333 is a prime.

It is a super-2 number, since 2×28486589² = 1622971505709842, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28486583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14243294 + 14243295.

It is an arithmetic number, because the mean of its divisors is an integer number (14243295).

Almost surely, 2^28486589 is an apocalyptic number.

It is an amenable number.

28486589 is a deficient number, since it is larger than the sum of its proper divisors (1).

28486589 is an equidigital number, since it uses as much as digits as its factorization.

28486589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1105920, while the sum is 50.

The square root of 28486589 is about 5337.2829229862. The cubic root of 28486589 is about 305.4078178039.

The spelling of 28486589 in words is "twenty-eight million, four hundred eighty-six thousand, five hundred eighty-nine".