428684836 has 12 divisors (see below), whose sum is σ = 750419712. Its totient is φ = 214279208.

The previous prime is 428684803. The next prime is 428684843. The reversal of 428684836 is 638486824.

It is a super-3 number, since 3×428684836³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 428684836.

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 3 ways as a sum of consecutive naturals, for example, 1581 + ... + 29323.

It is an arithmetic number, because the mean of its divisors is an integer number (62534976).

Almost surely, 2^428684836 is an apocalyptic number.

It is an amenable number.

428684836 is a deficient number, since it is larger than the sum of its proper divisors (321734876).

428684836 is a wasteful number, since it uses less digits than its factorization.

428684836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31610 (or 31608 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 49.

The square root of 428684836 is about 20704.7056487167. The cubic root of 428684836 is about 754.0139377846.

The spelling of 428684836 in words is "four hundred twenty-eight million, six hundred eighty-four thousand, eight hundred thirty-six".