2028643 has 2 divisors, whose sum is σ = 2028644. Its totient is φ = 2028642.

The previous prime is 2028629. The next prime is 2028647. The reversal of 2028643 is 3468202.

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-2028643 is a prime.

It is not a weakly prime, because it can be changed into another prime (2028647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1014321 + 1014322.

It is an arithmetic number, because the mean of its divisors is an integer number (1014322).

2^2028643 is an apocalyptic number.

2028643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2028643 is an equidigital number, since it uses as much as digits as its factorization.

2028643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 2028643 is about 1424.3043916242. The cubic root of 2028643 is about 126.5907216342.

The spelling of 2028643 in words is "two million, twenty-eight thousand, six hundred forty-three".