1028213 has 2 divisors, whose sum is σ = 1028214. Its totient is φ = 1028212.

The previous prime is 1028207. The next prime is 1028221. The reversal of 1028213 is 3128201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 734449 + 293764 = 857^2 + 542^2 .

It is a cyclic number.

It is not a de Polignac number, because 1028213 - 2⁶ = 1028149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1028191 and 1028200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1028243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514106 + 514107.

It is an arithmetic number, because the mean of its divisors is an integer number (514107).

2^1028213 is an apocalyptic number.

It is an amenable number.

1028213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028213 is an equidigital number, since it uses as much as digits as its factorization.

1028213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1028213 is about 1014.0083826083. The cubic root of 1028213 is about 100.9317252525.

Subtracting from 1028213 its sum of digits (17), we obtain a square (1028196 = 1014²).

The spelling of 1028213 in words is "one million, twenty-eight thousand, two hundred thirteen".