2028217 has 2 divisors, whose sum is σ = 2028218. Its totient is φ = 2028216.

The previous prime is 2028203. The next prime is 2028223. The reversal of 2028217 is 7128202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2027776 + 441 = 1424^2 + 21^2 .

It is a cyclic number.

It is not a de Polignac number, because 2028217 - 2¹⁵ = 1995449 is a prime.

It is a super-2 number, since 2×2028217² = 8227328398178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2028227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1014108 + 1014109.

It is an arithmetic number, because the mean of its divisors is an integer number (1014109).

2^2028217 is an apocalyptic number.

It is an amenable number.

2028217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2028217 is an equidigital number, since it uses as much as digits as its factorization.

2028217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 2028217 is about 1424.1548370876. The cubic root of 2028217 is about 126.5818599760.

The spelling of 2028217 in words is "two million, twenty-eight thousand, two hundred seventeen".