828261878 has 16 divisors (see below), whose sum is σ = 1305006336. Its totient is φ = 393498600.

The previous prime is 828261853. The next prime is 828261881. The reversal of 828261878 is 878162828.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 52676 + ... + 66567.

It is an arithmetic number, because the mean of its divisors is an integer number (81562896).

Almost surely, 2^828261878 is an apocalyptic number.

828261878 is a deficient number, since it is larger than the sum of its proper divisors (476744458).

828261878 is a wasteful number, since it uses less digits than its factorization.

828261878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119419.

The product of its digits is 688128, while the sum is 50.

The square root of 828261878 is about 28779.5392249424. The cubic root of 828261878 is about 939.1231743597.

The spelling of 828261878 in words is "eight hundred twenty-eight million, two hundred sixty-one thousand, eight hundred seventy-eight".