428804627 has 2 divisors, whose sum is σ = 428804628. Its totient is φ = 428804626.

The previous prime is 428804611. The next prime is 428804639. The reversal of 428804627 is 726408824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 428804627 - 2⁴ = 428804611 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (428804647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214402313 + 214402314.

It is an arithmetic number, because the mean of its divisors is an integer number (214402314).

Almost surely, 2^428804627 is an apocalyptic number.

428804627 is a deficient number, since it is larger than the sum of its proper divisors (1).

428804627 is an equidigital number, since it uses as much as digits as its factorization.

428804627 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 428804627 is about 20707.5982914485. The cubic root of 428804627 is about 754.0841647236.

The spelling of 428804627 in words is "four hundred twenty-eight million, eight hundred four thousand, six hundred twenty-seven".