8128193 has 4 divisors (see below), whose sum is σ = 8606340. Its totient is φ = 7650048.

The previous prime is 8128187. The next prime is 8128213. The reversal of 8128193 is 3918218.

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 4804864 + 3323329 = 2192^2 + 1823^2 .

It is a cyclic number.

It is not a de Polignac number, because 8128193 - 2⁶ = 8128129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8128693) 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, 239048 + ... + 239081.

It is an arithmetic number, because the mean of its divisors is an integer number (2151585).

Almost surely, 2^8128193 is an apocalyptic number.

It is an amenable number.

8128193 is a deficient number, since it is larger than the sum of its proper divisors (478147).

8128193 is a wasteful number, since it uses less digits than its factorization.

8128193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478146.

The product of its digits is 3456, while the sum is 32.

The square root of 8128193 is about 2850.9985969832. The cubic root of 8128193 is about 201.0626192033.

The spelling of 8128193 in words is "eight million, one hundred twenty-eight thousand, one hundred ninety-three".