428306665786 has 8 divisors (see below), whose sum is σ = 676273682880. Its totient is φ = 202882104828.

The previous prime is 428306665771. The next prime is 428306665793. The reversal of 428306665786 is 687566603824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5635613986 + ... + 5635614061.

It is an arithmetic number, because the mean of its divisors is an integer number (84534210360).

Almost surely, 2^428306665786 is an apocalyptic number.

428306665786 is a deficient number, since it is larger than the sum of its proper divisors (247967017094).

428306665786 is a wasteful number, since it uses less digits than its factorization.

428306665786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11271228068.

The product of its (nonzero) digits is 69672960, while the sum is 61.

The spelling of 428306665786 in words is "four hundred twenty-eight billion, three hundred six million, six hundred sixty-five thousand, seven hundred eighty-six".