828402646285 has 4 divisors (see below), whose sum is σ = 994083175548. Its totient is φ = 662722117024.

The previous prime is 828402646271. The next prime is 828402646289. The reversal of 828402646285 is 582646204828.

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

It can be written as a sum of positive squares in 2 ways, for example, as 121837996809 + 706564649476 = 349053^2 + 840574^2 .

It is a cyclic number.

It is not a de Polignac number, because 828402646285 - 2²⁷ = 828268428557 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 (828402646289) by changing a digit.

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, 82840264624 + ... + 82840264633.

It is an arithmetic number, because the mean of its divisors is an integer number (248520793887).

Almost surely, 2^828402646285 is an apocalyptic number.

It is an amenable number.

828402646285 is a deficient number, since it is larger than the sum of its proper divisors (165680529263).

828402646285 is a wasteful number, since it uses less digits than its factorization.

828402646285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165680529262.

The product of its (nonzero) digits is 11796480, while the sum is 55.

The spelling of 828402646285 in words is "eight hundred twenty-eight billion, four hundred two million, six hundred forty-six thousand, two hundred eighty-five".