828428864 has 14 divisors (see below), whose sum is σ = 1643913654. Its totient is φ = 414214400.

The previous prime is 828428831. The next prime is 828428891. The reversal of 828428864 is 468824828.

It can be written as a sum of positive squares in only one way, i.e., 794788864 + 33640000 = 28192^2 + 5800^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6472037 + ... + 6472164.

Almost surely, 2^828428864 is an apocalyptic number.

It is an amenable number.

828428864 is a deficient number, since it is larger than the sum of its proper divisors (815484790).

828428864 is a wasteful number, since it uses less digits than its factorization.

828428864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12944213 (or 12944203 counting only the distinct ones).

The product of its digits is 1572864, while the sum is 50.

The square root of 828428864 is about 28782.4402023178. The cubic root of 828428864 is about 939.1862823729.

The spelling of 828428864 in words is "eight hundred twenty-eight million, four hundred twenty-eight thousand, eight hundred sixty-four".