428648027 has 2 divisors, whose sum is σ = 428648028. Its totient is φ = 428648026.

The previous prime is 428648023. The next prime is 428648029. The reversal of 428648027 is 720846824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 428648027 - 2² = 428648023 is a prime.

Together with 428648029, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (428648021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214324013 + 214324014.

It is an arithmetic number, because the mean of its divisors is an integer number (214324014).

Almost surely, 2^428648027 is an apocalyptic number.

428648027 is a deficient number, since it is larger than the sum of its proper divisors (1).

428648027 is an equidigital number, since it uses as much as digits as its factorization.

428648027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172032, while the sum is 41.

The square root of 428648027 is about 20703.8167254253. The cubic root of 428648027 is about 753.9923560450.

The spelling of 428648027 in words is "four hundred twenty-eight million, six hundred forty-eight thousand, twenty-seven".