28858387 has 2 divisors, whose sum is σ = 28858388. Its totient is φ = 28858386.

The previous prime is 28858363. The next prime is 28858411. The reversal of 28858387 is 78385882.

It is a balanced prime because it is at equal distance from previous prime (28858363) and next prime (28858411).

It is a cyclic number.

It is not a de Polignac number, because 28858387 - 2¹¹ = 28856339 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28858387.

It is not a weakly prime, because it can be changed into another prime (28858087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14429193 + 14429194.

It is an arithmetic number, because the mean of its divisors is an integer number (14429194).

Almost surely, 2^28858387 is an apocalyptic number.

28858387 is a deficient number, since it is larger than the sum of its proper divisors (1).

28858387 is an equidigital number, since it uses as much as digits as its factorization.

28858387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 860160, while the sum is 49.

The square root of 28858387 is about 5372.0002792256. Note that the first 3 decimals coincide. The cubic root of 28858387 is about 306.7307743785.

The spelling of 28858387 in words is "twenty-eight million, eight hundred fifty-eight thousand, three hundred eighty-seven".