210428269 has 2 divisors, whose sum is σ = 210428270. Its totient is φ = 210428268.

The previous prime is 210428237. The next prime is 210428297. The reversal of 210428269 is 962824012.

210428269 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149744169 + 60684100 = 12237^2 + 7790^2 .

It is a cyclic number.

It is not a de Polignac number, because 210428269 - 2⁵ = 210428237 is a prime.

It is a super-2 number, since 2×210428269² = 88560112788672722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210428299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105214134 + 105214135.

It is an arithmetic number, because the mean of its divisors is an integer number (105214135).

Almost surely, 2^210428269 is an apocalyptic number.

It is an amenable number.

210428269 is a deficient number, since it is larger than the sum of its proper divisors (1).

210428269 is an equidigital number, since it uses as much as digits as its factorization.

210428269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 210428269 is about 14506.1459044089. The cubic root of 210428269 is about 594.7959840052.

The spelling of 210428269 in words is "two hundred ten million, four hundred twenty-eight thousand, two hundred sixty-nine".