428730459 has 12 divisors (see below), whose sum is σ = 603311976. Its totient is φ = 270776448.

The previous prime is 428730457. The next prime is 428730469. The reversal of 428730459 is 954037824.

It is not a de Polignac number, because 428730459 - 2¹ = 428730457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 428730459.

It is not an unprimeable number, because it can be changed into a prime (428730451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 196854 + ... + 199019.

It is an arithmetic number, because the mean of its divisors is an integer number (50275998).

Almost surely, 2^428730459 is an apocalyptic number.

428730459 is a deficient number, since it is larger than the sum of its proper divisors (174581517).

428730459 is a wasteful number, since it uses less digits than its factorization.

428730459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395914 (or 395895 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 428730459 is about 20705.8073737780. The cubic root of 428730459 is about 754.0406856070.

The spelling of 428730459 in words is "four hundred twenty-eight million, seven hundred thirty thousand, four hundred fifty-nine".