28347043 has 2 divisors, whose sum is σ = 28347044. Its totient is φ = 28347042.

The previous prime is 28347029. The next prime is 28347047. The reversal of 28347043 is 34074382.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28347043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28346996 and 28347014.

It is not a weakly prime, because it can be changed into another prime (28347047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14173521 + 14173522.

It is an arithmetic number, because the mean of its divisors is an integer number (14173522).

Almost surely, 2^28347043 is an apocalyptic number.

28347043 is a deficient number, since it is larger than the sum of its proper divisors (1).

28347043 is an equidigital number, since it uses as much as digits as its factorization.

28347043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 28347043 is about 5324.1941174228. The cubic root of 28347043 is about 304.9083053213.

The spelling of 28347043 in words is "twenty-eight million, three hundred forty-seven thousand, forty-three".