828505772 has 6 divisors (see below), whose sum is σ = 1449885108. Its totient is φ = 414252884.

The previous prime is 828505771. The next prime is 828505781. The reversal of 828505772 is 277505828.

It is not an unprimeable number, because it can be changed into a prime (828505771) 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 as a sum of consecutive naturals, namely, 103563218 + ... + 103563225.

It is an arithmetic number, because the mean of its divisors is an integer number (241647518).

Almost surely, 2^828505772 is an apocalyptic number.

It is an amenable number.

828505772 is a deficient number, since it is larger than the sum of its proper divisors (621379336).

828505772 is a wasteful number, since it uses less digits than its factorization.

828505772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207126447 (or 207126445 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 44.

The square root of 828505772 is about 28783.7761942383. The cubic root of 828505772 is about 939.2153448979.

The spelling of 828505772 in words is "eight hundred twenty-eight million, five hundred five thousand, seven hundred seventy-two".