428114257 has 2 divisors, whose sum is σ = 428114258. Its totient is φ = 428114256.

The previous prime is 428114243. The next prime is 428114261. The reversal of 428114257 is 752411824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 382632721 + 45481536 = 19561^2 + 6744^2 .

It is a cyclic number.

It is not a de Polignac number, because 428114257 - 2¹⁹ = 427589969 is a prime.

It is not a weakly prime, because it can be changed into another prime (428114227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214057128 + 214057129.

It is an arithmetic number, because the mean of its divisors is an integer number (214057129).

Almost surely, 2^428114257 is an apocalyptic number.

It is an amenable number.

428114257 is a deficient number, since it is larger than the sum of its proper divisors (1).

428114257 is an equidigital number, since it uses as much as digits as its factorization.

428114257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17920, while the sum is 34.

The square root of 428114257 is about 20690.9220915840. The cubic root of 428114257 is about 753.6792587073.

The spelling of 428114257 in words is "four hundred twenty-eight million, one hundred fourteen thousand, two hundred fifty-seven".