428320835 has 16 divisors (see below), whose sum is σ = 540573696. Its totient is φ = 325166688.

The previous prime is 428320813. The next prime is 428320853. The reversal of 428320835 is 538023824.

It is a cyclic number.

It is not a de Polignac number, because 428320835 - 2⁶ = 428320771 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 428320795 and 428320804.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 59 + ... + 29268.

It is an arithmetic number, because the mean of its divisors is an integer number (33785856).

Almost surely, 2^428320835 is an apocalyptic number.

428320835 is a deficient number, since it is larger than the sum of its proper divisors (112252861).

428320835 is a wasteful number, since it uses less digits than its factorization.

428320835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29482.

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 428320835 is about 20695.9134855169. The cubic root of 428320835 is about 753.8004635149.

The spelling of 428320835 in words is "four hundred twenty-eight million, three hundred twenty thousand, eight hundred thirty-five".