428273 has 2 divisors, whose sum is σ = 428274. Its totient is φ = 428272.

The previous prime is 428251. The next prime is 428297. The reversal of 428273 is 372824.

428273 is nontrivially palindromic in base 15.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 277729 + 150544 = 527^2 + 388^2 .

It is a cyclic number.

It is not a de Polignac number, because 428273 - 2¹⁰ = 427249 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (428173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214136 + 214137.

It is an arithmetic number, because the mean of its divisors is an integer number (214137).

2⁴²⁸²⁷³ is an apocalyptic number.

It is an amenable number.

428273 is a deficient number, since it is larger than the sum of its proper divisors (1).

428273 is an equidigital number, since it uses as much as digits as its factorization.

428273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 26.

The square root of 428273 is about 654.4257024292. The cubic root of 428273 is about 75.3772400916.

The spelling of 428273 in words is "four hundred twenty-eight thousand, two hundred seventy-three".