27828193 has 4 divisors (see below), whose sum is σ = 27858708. Its totient is φ = 27797680.

The previous prime is 27828187. The next prime is 27828209. The reversal of 27828193 is 39182872.

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 9909904 + 17918289 = 3148^2 + 4233^2 .

It is a cyclic number.

It is not a de Polignac number, because 27828193 - 2⁵ = 27828161 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27826193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13846 + ... + 15727.

It is an arithmetic number, because the mean of its divisors is an integer number (6964677).

Almost surely, 2^27828193 is an apocalyptic number.

It is an amenable number.

27828193 is a deficient number, since it is larger than the sum of its proper divisors (30515).

27828193 is an equidigital number, since it uses as much as digits as its factorization.

27828193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30514.

The product of its digits is 48384, while the sum is 40.

The square root of 27828193 is about 5275.2434067065. The cubic root of 27828193 is about 303.0365424817.

The spelling of 27828193 in words is "twenty-seven million, eight hundred twenty-eight thousand, one hundred ninety-three".