828578656 has 48 divisors (see below), whose sum is σ = 1658682144. Its totient is φ = 407384064.

The previous prime is 828578617. The next prime is 828578687. The reversal of 828578656 is 656875828.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 828578597 and 828578606.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 536221 + ... + 537763.

It is an arithmetic number, because the mean of its divisors is an integer number (34555878).

Almost surely, 2^828578656 is an apocalyptic number.

It is an amenable number.

828578656 is an abundant number, since it is smaller than the sum of its proper divisors (830103488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

828578656 is a wasteful number, since it uses less digits than its factorization.

828578656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1823 (or 1815 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 55.

The square root of 828578656 is about 28785.0422268233. The cubic root of 828578656 is about 939.2428851461.

The spelling of 828578656 in words is "eight hundred twenty-eight million, five hundred seventy-eight thousand, six hundred fifty-six".