28343359 has 4 divisors (see below), whose sum is σ = 30920040. Its totient is φ = 25766680.

The previous prime is 28343339. The next prime is 28343387. The reversal of 28343359 is 95334382.

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 28343359 - 2¹⁷ = 28212287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28343309) 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, 1288324 + ... + 1288345.

It is an arithmetic number, because the mean of its divisors is an integer number (7730010).

Almost surely, 2^28343359 is an apocalyptic number.

28343359 is a deficient number, since it is larger than the sum of its proper divisors (2576681).

28343359 is a wasteful number, since it uses less digits than its factorization.

28343359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2576680.

The product of its digits is 77760, while the sum is 37.

The square root of 28343359 is about 5323.8481383300. The cubic root of 28343359 is about 304.8950960556.

The spelling of 28343359 in words is "twenty-eight million, three hundred forty-three thousand, three hundred fifty-nine".