2028647 has 2 divisors, whose sum is σ = 2028648. Its totient is φ = 2028646.

The previous prime is 2028643. The next prime is 2028667. The reversal of 2028647 is 7468202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2028647 - 2² = 2028643 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2028643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1014323 + 1014324.

It is an arithmetic number, because the mean of its divisors is an integer number (1014324).

2^2028647 is an apocalyptic number.

2028647 is a deficient number, since it is larger than the sum of its proper divisors (1).

2028647 is an equidigital number, since it uses as much as digits as its factorization.

2028647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 2028647 is about 1424.3057958177. The cubic root of 2028647 is about 126.5908048363.

The spelling of 2028647 in words is "two million, twenty-eight thousand, six hundred forty-seven".