28698361 has 2 divisors, whose sum is σ = 28698362. Its totient is φ = 28698360.

The previous prime is 28698289. The next prime is 28698389. The reversal of 28698361 is 16389682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23222761 + 5475600 = 4819^2 + 2340^2 .

It is a cyclic number.

It is not a de Polignac number, because 28698361 - 2²³ = 20309753 is a prime.

It is not a weakly prime, because it can be changed into another prime (28698161) 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, 14349180 + 14349181.

It is an arithmetic number, because the mean of its divisors is an integer number (14349181).

Almost surely, 2^28698361 is an apocalyptic number.

It is an amenable number.

28698361 is a deficient number, since it is larger than the sum of its proper divisors (1).

28698361 is an equidigital number, since it uses as much as digits as its factorization.

28698361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 43.

The square root of 28698361 is about 5357.0851215936. The cubic root of 28698361 is about 306.1627603237.

The spelling of 28698361 in words is "twenty-eight million, six hundred ninety-eight thousand, three hundred sixty-one".