28893859 has 2 divisors, whose sum is σ = 28893860. Its totient is φ = 28893858.

The previous prime is 28893857. The next prime is 28893881. The reversal of 28893859 is 95839882.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28893859 - 2¹ = 28893857 is a prime.

Together with 28893857, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28893857) 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, 14446929 + 14446930.

It is an arithmetic number, because the mean of its divisors is an integer number (14446930).

Almost surely, 2^28893859 is an apocalyptic number.

28893859 is a deficient number, since it is larger than the sum of its proper divisors (1).

28893859 is an equidigital number, since it uses as much as digits as its factorization.

28893859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1244160, while the sum is 52.

The square root of 28893859 is about 5375.3008287909. The cubic root of 28893859 is about 306.8563981601.

The spelling of 28893859 in words is "twenty-eight million, eight hundred ninety-three thousand, eight hundred fifty-nine".