28362689 has 2 divisors, whose sum is σ = 28362690. Its totient is φ = 28362688.

The previous prime is 28362673. The next prime is 28362707. The reversal of 28362689 is 98626382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23931664 + 4431025 = 4892^2 + 2105^2 .

It is a cyclic number.

It is not a de Polignac number, because 28362689 - 2⁴ = 28362673 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28362619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14181344 + 14181345.

It is an arithmetic number, because the mean of its divisors is an integer number (14181345).

Almost surely, 2^28362689 is an apocalyptic number.

It is an amenable number.

28362689 is a deficient number, since it is larger than the sum of its proper divisors (1).

28362689 is an equidigital number, since it uses as much as digits as its factorization.

28362689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 44.

The square root of 28362689 is about 5325.6632450804. The cubic root of 28362689 is about 304.9643925107.

The spelling of 28362689 in words is "twenty-eight million, three hundred sixty-two thousand, six hundred eighty-nine".