28660343 has 2 divisors, whose sum is σ = 28660344. Its totient is φ = 28660342.

The previous prime is 28660327. The next prime is 28660349. The reversal of 28660343 is 34306682.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28660343 - 2⁴ = 28660327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28660349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14330171 + 14330172.

It is an arithmetic number, because the mean of its divisors is an integer number (14330172).

Almost surely, 2^28660343 is an apocalyptic number.

28660343 is a deficient number, since it is larger than the sum of its proper divisors (1).

28660343 is an equidigital number, since it uses as much as digits as its factorization.

28660343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 28660343 is about 5353.5355607299. The cubic root of 28660343 is about 306.0275047542.

The spelling of 28660343 in words is "twenty-eight million, six hundred sixty thousand, three hundred forty-three".