28615193 has 2 divisors, whose sum is σ = 28615194. Its totient is φ = 28615192.

The previous prime is 28615157. The next prime is 28615207. The reversal of 28615193 is 39151682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17572864 + 11042329 = 4192^2 + 3323^2 .

It is a cyclic number.

It is not a de Polignac number, because 28615193 - 2¹⁰ = 28614169 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (28615123) 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, 14307596 + 14307597.

It is an arithmetic number, because the mean of its divisors is an integer number (14307597).

Almost surely, 2^28615193 is an apocalyptic number.

It is an amenable number.

28615193 is a deficient number, since it is larger than the sum of its proper divisors (1).

28615193 is an equidigital number, since it uses as much as digits as its factorization.

28615193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 35.

The square root of 28615193 is about 5349.3170592142. The cubic root of 28615193 is about 305.8667204050.

The spelling of 28615193 in words is "twenty-eight million, six hundred fifteen thousand, one hundred ninety-three".