28563343 has 4 divisors (see below), whose sum is σ = 29102328. Its totient is φ = 28024360.

The previous prime is 28563331. The next prime is 28563361. The reversal of 28563343 is 34336582.

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

It is a cyclic number.

It is not a de Polignac number, because 28563343 - 2²¹ = 26466191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28563299 and 28563308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28563313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269413 + ... + 269518.

It is an arithmetic number, because the mean of its divisors is an integer number (7275582).

Almost surely, 2^28563343 is an apocalyptic number.

28563343 is a deficient number, since it is larger than the sum of its proper divisors (538985).

28563343 is an equidigital number, since it uses as much as digits as its factorization.

28563343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538984.

The product of its digits is 51840, while the sum is 34.

The square root of 28563343 is about 5344.4684487795. The cubic root of 28563343 is about 305.6818678114.

The spelling of 28563343 in words is "twenty-eight million, five hundred sixty-three thousand, three hundred forty-three".