28843193 has 4 divisors (see below), whose sum is σ = 29123328. Its totient is φ = 28563060.

The previous prime is 28843189. The next prime is 28843201. The reversal of 28843193 is 39134882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28843193 - 2² = 28843189 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28843093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139913 + ... + 140118.

It is an arithmetic number, because the mean of its divisors is an integer number (7280832).

Almost surely, 2^28843193 is an apocalyptic number.

It is an amenable number.

28843193 is a deficient number, since it is larger than the sum of its proper divisors (280135).

28843193 is a wasteful number, since it uses less digits than its factorization.

28843193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280134.

The product of its digits is 41472, while the sum is 38.

The square root of 28843193 is about 5370.5859084461. The cubic root of 28843193 is about 306.6769334675.

The spelling of 28843193 in words is "twenty-eight million, eight hundred forty-three thousand, one hundred ninety-three".