28858807 has 2 divisors, whose sum is σ = 28858808. Its totient is φ = 28858806.

The previous prime is 28858801. The next prime is 28858867. The reversal of 28858807 is 70885882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28858807 - 2¹¹ = 28856759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28858801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14429403 + 14429404.

It is an arithmetic number, because the mean of its divisors is an integer number (14429404).

Almost surely, 2^28858807 is an apocalyptic number.

28858807 is a deficient number, since it is larger than the sum of its proper divisors (1).

28858807 is an equidigital number, since it uses as much as digits as its factorization.

28858807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 286720, while the sum is 46.

The square root of 28858807 is about 5372.0393706673. The cubic root of 28858807 is about 306.7322624069.

It can be divided in two parts, 288 and 58807, that added together give a palindrome (59095).

The spelling of 28858807 in words is "twenty-eight million, eight hundred fifty-eight thousand, eight hundred seven".