428248342783 has 4 divisors (see below), whose sum is σ = 436328500248. Its totient is φ = 420168185320.

The previous prime is 428248342741. The next prime is 428248342787. The reversal of 428248342783 is 387243842824.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 428248342783 - 2⁹ = 428248342271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428248342787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4040078653 + ... + 4040078758.

It is an arithmetic number, because the mean of its divisors is an integer number (109082125062).

Almost surely, 2^428248342783 is an apocalyptic number.

428248342783 is a deficient number, since it is larger than the sum of its proper divisors (8080157465).

428248342783 is an equidigital number, since it uses as much as digits as its factorization.

428248342783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8080157464.

The product of its digits is 16515072, while the sum is 55.

The spelling of 428248342783 in words is "four hundred twenty-eight billion, two hundred forty-eight million, three hundred forty-two thousand, seven hundred eighty-three".