28884893 has 2 divisors, whose sum is σ = 28884894. Its totient is φ = 28884892.

The previous prime is 28884881. The next prime is 28884917. The reversal of 28884893 is 39848882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28334329 + 550564 = 5323^2 + 742^2 .

It is a cyclic number.

It is not a de Polignac number, because 28884893 - 2²⁴ = 12107677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28884593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14442446 + 14442447.

It is an arithmetic number, because the mean of its divisors is an integer number (14442447).

Almost surely, 2^28884893 is an apocalyptic number.

It is an amenable number.

28884893 is a deficient number, since it is larger than the sum of its proper divisors (1).

28884893 is an equidigital number, since it uses as much as digits as its factorization.

28884893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 884736, while the sum is 50.

The square root of 28884893 is about 5374.4667642474. The cubic root of 28884893 is about 306.8246548625.

The spelling of 28884893 in words is "twenty-eight million, eight hundred eighty-four thousand, eight hundred ninety-three".