28321075343 has 4 divisors (see below), whose sum is σ = 30895718568. Its totient is φ = 25746432120.

The previous prime is 28321075331. The next prime is 28321075351. The reversal of 28321075343 is 34357012382.

It is a happy number.

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 28321075343 - 2⁸ = 28321075087 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28321075297 and 28321075306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28321075843) 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, 1287321596 + ... + 1287321617.

It is an arithmetic number, because the mean of its divisors is an integer number (7723929642).

Almost surely, 2^28321075343 is an apocalyptic number.

28321075343 is a deficient number, since it is larger than the sum of its proper divisors (2574643225).

28321075343 is a wasteful number, since it uses less digits than its factorization.

28321075343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2574643224.

The product of its (nonzero) digits is 120960, while the sum is 38.

The spelling of 28321075343 in words is "twenty-eight billion, three hundred twenty-one million, seventy-five thousand, three hundred forty-three".