28798873 has 2 divisors, whose sum is σ = 28798874. Its totient is φ = 28798872.

The previous prime is 28798853. The next prime is 28798879. The reversal of 28798873 is 37889782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16875664 + 11923209 = 4108^2 + 3453^2 .

It is a cyclic number.

It is not a de Polignac number, because 28798873 - 2⁹ = 28798361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28798873.

It is not a weakly prime, because it can be changed into another prime (28798879) 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, 14399436 + 14399437.

It is an arithmetic number, because the mean of its divisors is an integer number (14399437).

Almost surely, 2^28798873 is an apocalyptic number.

It is an amenable number.

28798873 is a deficient number, since it is larger than the sum of its proper divisors (1).

28798873 is an equidigital number, since it uses as much as digits as its factorization.

28798873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 52.

The square root of 28798873 is about 5366.4581429468. The cubic root of 28798873 is about 306.5197746148.

Subtracting 28798873 from its reverse (37889782), we obtain a palindrome (9090909).

The spelling of 28798873 in words is "twenty-eight million, seven hundred ninety-eight thousand, eight hundred seventy-three".