28246193 has 4 divisors (see below), whose sum is σ = 28283508. Its totient is φ = 28208880.

The previous prime is 28246189. The next prime is 28246199. The reversal of 28246193 is 39164282.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14615329 + 13630864 = 3823^2 + 3692^2 .

It is a cyclic number.

It is not a de Polignac number, because 28246193 - 2² = 28246189 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28246199) 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 in 3 ways as a sum of consecutive naturals, for example, 17498 + ... + 19043.

It is an arithmetic number, because the mean of its divisors is an integer number (7070877).

Almost surely, 2^28246193 is an apocalyptic number.

It is an amenable number.

28246193 is a deficient number, since it is larger than the sum of its proper divisors (37315).

28246193 is an equidigital number, since it uses as much as digits as its factorization.

28246193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37314.

The product of its digits is 20736, while the sum is 35.

The square root of 28246193 is about 5314.7147618663. The cubic root of 28246193 is about 304.5462858898.

The spelling of 28246193 in words is "twenty-eight million, two hundred forty-six thousand, one hundred ninety-three".